Knives, collection knife, tactical knives, outdoor knives, pocket knives and tools

Laguiole en Aubrac's internationally awarded forge is a benchmark for traditional French craftsmanship.

This traditionally designed Laguiole knife bears the LOG (Laguiole Origine Garantie) quality mark, which means it was made entirely by hand in Laguiole by a master blacksmith in accordance with strict quality criteria and LOG production specifications. Depending on the version, it requires from 109 to 216 working steps.

Intended use: regional/collectible

Type of production: handcrafted
Blade: stainless steel Sandvik 12C27
Country of manufacture: France
Handle: ebony wood with mammoth fossil ivory insert
Blade length: 104mm.
Blade thickness: 3mm.
Length closed: 119mm.
Total length: 220mm.
Weight: 104g.
Closure: rear retention spring
Clip: -
Scabbard: -
Notes: -

The internationally awarded forge of Laguiole en Aubrac is a benchmark for traditional French craftsmanship.

This knife is dedicated to Camembert and is sold in the round wooden box typical of this famous cheese known throughout the world.

Intended use: Regional/Collection

Type of production: artisanal
Blade: Stainless steel 12C27
Country of production: France
Handle: Pistachio wood
Blade length: 80mm.
Blade thickness: 2.6mm.
Length closed: 110mm.
Total length: 193mm.
Weight: 88g.
Closure: Rear retention spring
Clip: -
Sheath: -
Notes: wooden box

Laguiole en Aubrac's internationally awarded forge is a benchmark for traditional French craftsmanship.

This traditionally designed Laguiole knife bears the LOG (Laguiole Origine Garantie) quality mark, which means it was made entirely by hand in Laguiole by a master blacksmith in accordance with strict quality criteria and LOG production specifications. Depending on the version, it requires from 109 to 216 working steps.


Intended use: regional/collectible

Type of production: handcrafted
Blade: stainless damasci steel
Country of manufacture: France
Handle: raw buffalo horn
Blade length: 104mm.
Blade thickness: 3mm.
Length closed: 119mm.
Total length: 220mm.
Weight: 104g.
Closure: rear retention spring
Clip: -
Scabbard: -
Notes: -

The internationally awarded forge of Laguiole en Aubrac is a benchmark for traditional French craftsmanship.

This traditionally designed Laguiole knife bears the LOG (Laguiole Origine Garantie) quality mark, which means that it was made entirely by hand in Laguiole by a master blacksmith in accordance with the strict quality criteria and LOG production specifications. Depending on the version, it requires between 109 and 216 work steps.

The handle is stabilised by two solid steel hilt bolsters. The left handle bears the traditional shepherd's cross (croix du berger) as decoration. 

The back spring (with the Maltese cross symbol) was forged from a single piece and decorated by hand. The decoration is the unique 'signature' of the master smith, registered with the Prefecture of Puy-de-Dôme. 

Intended use: Regional/Collection

Type of production: artisanal
Blade: Stainless steel 12C27
Blade production: France
Handle: Blond cow horn
Blade length: 100mm.
Blade thickness: 3mm.
Length closed: 120mm.
Total length: 220mm.
Balance: -
Weight: 104g.
Closure: Rear retention spring
Clip: -
Sheath: -
Notes: -

The internationally awarded forge of Laguiole en Aubrac is a benchmark for traditional French craftsmanship.

This traditionally designed Laguiole knife bears the LOG (Laguiole Origine Garantie) quality mark, which means that it was made entirely by hand in Laguiole by a master blacksmith in accordance with the strict quality criteria and LOG production specifications. Depending on the version, it requires between 109 and 216 work steps.

The handle is stabilised by two solid steel hilt bolsters. The left handle bears the traditional shepherd's cross (croix du berger) as decoration. 

The back spring (with the Pilgrim's shell symbol) was forged from a single piece and decorated by hand. The decoration is the unique 'signature' of the master smith, registered with the Prefecture of Puy-de-Dôme. 

The blade uses 67-layer Japanese VG10 rolled steel, manufactured by Takefu Steel.

Intended use: Regional/Collection

Type of production: artisanal
Blade: Damascus and Japanese VG10 rolled steel
Blade production: France
Handle: Blond Cowhorn
Blade length: 100mm.
Blade thickness: 3mm.
Length closed: 120mm.
Total length: 220mm.
Balance: -
Weight: 104g.
Closure: Rear retention spring
Clip: -
Sheath: -
Notes: -

These high quality knives, are handcrafted in the tradition of French Thiers cutlery.

This large, perfectly balanced Laguiole hunting knife was made entirely by hand in Laguiole, by a master blacksmith, according to the strict LOG (Laguiole Origine Garantie) quality criteria. Depending on the version, it requires from 109 to 216 working steps.

The blade has a very balanced geometry proven over many decades: it is 11 cm long, 3 cm high and 4 mm thick. Both the bee and the area above the ricasso can be used as a thumb rest.

The blade is ground on both sides to about 22 degrees to the cutting edge (flat grind), so that optimal breaking and scoring is guaranteed and, at the same time, the edge does not round off too quickly. 

The handle scales are polished to a high shine with seven different oils and high quality wax pastes on large felt discs. 

The left handle bears the traditional shepherd's cross (French: croix du berger) as decoration.

Intended Use: Regional/Collection/Outdoor/Hunting

Type of production: handcrafted
Blade: Swedish 12C27 stainless steel at 54HRC satin finish.
Blade Production: France
Handle: Ebony
Blade length: 110mm.
Blade thickness: 4mm.
Length closed: 138mm.
Total length: 240mm.
Balance: -
Weight: 180g.
Closure: rear retention spring
Clip: -
Scabbard: -
Notes: -

Intended Use: Tactical/Military

Production type: Industrial
Country of Production: USA
Blade: Stainless steel CPM-S35VN
Blade treatment: Blackwash
Handle: Titanium Blackwash and Carbon Fiber Red and Black
Blade Length: 104mm.
Blade thickness: 4mm.
Length closed: 131mm.
Total length: 235mm.
Thickness when closed: 13mm.
Weight: 125g.
Closure: Frame Lock
Clip: stainless steel, removable and multi-position
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Dmitry Sinkevich - KVT opening on ball bearings - Opening via Carson Flipper system - Limited Edition "Factory Special Series"

Intended Use: Sporting/Tactical

Production type: Industrial
Country of Production: USA
Blade: Stainless steel CPM-20CV
Blade treatment: Blackwash
Handle: Carbon fiber and Titanium Blackwash
Blade length: 83mm.
Blade thickness: 3mm.
Length closed: 112mm.
Total length: 191mm.
Weight: 65g.
Closure: Framelock
Clip: Removable, stainless steel
Notes: KVT opening on ball bearings - Carson Flipper opening system - Design by Sinkevich - Limited Edition "Factory Special Series"

KNIFE WITHDRAWAL FROM A PRIVATE COLLECTION
* Type: Previously purchased
* Condition: in like new condition
* Commercially available: discontinued
* Sharpening: factory sharpening
* Marks on blade: no marks
* Marks on the handle: no marks
* Box: original ZT box
* Manuals, Certificates and Warranties: -
* Checked and certified by our internal laboratory Coltelleria Collini

Intended use: Sports / Collection

Type of production: Industrial
Production Lama: USA
Blade: CTS-204P stainless steel
Blade treatment: stone washed and satin finish
Handle: Titanium with anodized spacers
Blade length: 87mm.
Blade thickness: 4mm.
Closed length: 112mm.
Total length: 193mm.
Thick when closed: 14mm.
Weight: 178g.
Closure: Framelock
Clip: Removable, reversible, in stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Dmirty Sinkevich - KVT opening on ball bearings

We always prioritize reliability and ease of use.

Its light weight and deep carry clip means you'll always have the Z200 by your side. If you prefer a controlled two-handed opening the Z200 is made for you. We milled a groove into the Sleipner steel blade that allows for easy and discreet opening.

Intended Use: EDC / Sporty

Production type: Industrial
Country of Production: Czech Republic
Blade: Sleipner steel 58HRC
Blade Finish: Stonewashed
Handle: G-10
Blade length: 85mm.
Blade thickness: 3.5mm.
Total length: 205mm.
Weight: 102g.
Closing System: LinerLock
Clip: deep pocket, removable and reversible, flush mounted, stainless steel with Black DLC finish
Package: Cardboard box with ANV logos
Notes: At the base of the blade groove there is a small fluorescent dot that, accumulating light or ultraviolet, in the dark releases a low luminescence useful to identify the knife.

Timeless simplicity is the main reason why you will never get tired of your Z100.

In our daily lives we look for things that become part of us, things that we will keep with us every day without even having to think about it. Thanks to the deep pocket clip, you won't even know you have it with you until the right moment comes. Then, as soon as you use it, you'll appreciate the flipper opening and sleipner steel blade.

Intended Use: EDC / Sporting

Production type: Industrial
Country of Production: Czech Republic
Blade: Sleipner steel 58HRC
Blade Finish: Stonewashed
Handle: Aluminum 6061-T6
Blade length: 85mm.
Blade thickness: 3.5mm.
Total length: 205mm.
Weight: 95g.
Closing System: FrameLock
Clip: deep pocket, removable and reversible, flush stainless steel with Black DLC finish
Package: Cardboard box with ANV logos
Notes: at the base of the flipper there is a small fluorescent dot that, accumulating light or ultraviolet, in the dark releases a low luminescence useful to identify the knife

Timeless simplicity is the main reason why you will never get tired of your Z100.

In our daily lives we look for things that become part of us, things that we will keep with us every day without even having to think about it. Thanks to the deep pocket clip, you won't even know you have it with you until the right moment comes. Then, as soon as you use it, you'll appreciate the flipper opening and sleipner steel blade.

Intended Use: EDC / Sporting

Production type: Industrial
Country of Production: Czech Republic
Blade: Sleipner steel 58HRC
Blade Finish: Black DLC
Handle: G-10
Blade length: 85mm.
Blade thickness: 3.5mm.
Total length: 205mm.
Weight: 95g.
Closing System: LinerLock
Clip: deep pocket, removable and reversible, flush stainless steel with Black DLC treatment
Package: Cardboard box with ANV logos
Notes: at the base of the flipper there is a small fluorescent dot that, accumulating light or ultraviolet, in the dark releases a low luminescence useful to identify the knife

Confident elegance complemented by aristocratic lines gives the Z400 its well-deserved dominance over the rest of our folding knives.

A dagger-style, single-edged spear point blade made from Sleipner steel and equipped with a double guard that allows for an aggressive opening at the edge of the pocket when drawing or the ability to use it as a flipper system. Rounding out the package is an extremely durable, lightweight handle made of G10 composite with a secure liner lock and a deep pocket clip. All of this is designed in combination with a sense of elegance and simplicity. This is the Z400.

Intended use: EDC / Sporting

Production Type: Industrial
Country of Production: Czech Republic
Blade: Sleipner 58HRC steel
Blade Finish: Black DLC
Handle: G-10
Blade length: 100mm.
Blade thickness: 3.5mm.
Total length: 230mm.
Weight: 110g.
Closing System: LinerLock
Clip: deep pocket, removable and reversible, flush, in Black DLC stainless steel
Package: Cardboard box with ANV logos
Notes: -

Confident elegance complemented by aristocratic lines gives the Z400 its well-deserved dominance over the rest of our folding knives.

A dagger-style, single-edged spear point blade made from Sleipner steel and equipped with a double guard that allows for an aggressive opening at the edge of the pocket when drawing or the ability to use it as a flipper system. Rounding things out is an extremely durable, lightweight handle made of G10 composite with a secure liner lock and a deep pocket clip. All of this is designed in combination with a sense of elegance and simplicity. This is the Z400.

Intended use: EDC / Sporting

Production Type: Industrial
Country of Production: Czech Republic
Blade: Sleipner 58HRC steel
Blade Finish: Stonewashed
Handle: G-10
Blade length: 100mm.
Blade thickness: 3.5mm.
Total length: 230mm.
Weight: 110g.
Closing System: LinerLock
Clip: deep pocket, removable and reversible, flush mounted
Package: Cardboard box with ANV logos
Notes: -

Being reliable isn't easy.

If you want to be taken seriously, you have to perform over and over again. The new A200 was born to do just that; thanks to its lightweight yet durable construction, you'll almost forget you have it. Being fully ambidextrous and super safe at all times, the new A200 is the perfect EDC for your every day adventures.

Intended Use: EDC / Sporty

Production type: Industrial
Country of Production: Czech Republic
Blade: Sleipner steel 60HRC
Blade Finish: Black DLC
Handle: G-10 with spacers and red anodized aluminum opening pin
Blade length: 88mm.
Blade thickness: 3mm.
Total length: 210mm.
Weight: 81g.
Closing System: Ambidextrous A-Lock.
Clip: deep pocket, removable and reversible, flush, in Black DLC stainless steel
Package: Cardboard box with ANV logos
Notes: -

Knife from a private collection - Iconic and sought after model designed by Ken Onion and Mick Strider - Out of production and no longer available - Perfect in all, like new, serial 1544, does not have any kind of sign or defect - The knife shows an uncertainty at the tip, on the sharpening, which is slightly different; presumably already produced in this way by ZT - The sharpening is good and shows no signs of wear, presumably the sharpening is the original factory - Accompanied by original Zero Tolerance box, but referred to the model 0301 with green G10 handle - Checked and certified by our internal laboratory

Intended Use: Collection / Tactical / Military

Production type: Industrial
Country of Production: USA
Blade: Steel CPM-S30V
Blade Finish: Tigerstripe - Tungsten DLC Coating
Handle: Titanium and G-10 with 3D finish
Blade Length: 95mm.
Blade thickness: 4mm.
Length closed: 133mm.
Total length: 218mm.
Thickness when closed: 17mm.
Weight: 232g.
Closure: Frame Lock
Clip: Removable, Multiposition, Stainless Steel
Package: Cardboard box with Zero Tolerance logos (the box refers to a different model, 0301)
Notes: Design by Mick Strider and Ken Onion - SpeedSafe opening system - Like new - Retired from prvated collection

A handmade Laguiole en Aubrac knife made by a master craftsman from the region of origin of Laguiole. Extremely precise in its manufacture, it is decorated with the shepherd's cross on the handle. This cross allowed those who left during the long months of the transhumance to say their prayers once the knife was stuck in the bread.

Destination: French regional collector's knife

Blade: Swedish stainless steel 12C27 to 54HRC brut de forge.
Handle: buffalo
Blade length: 90 mm.
Blade thickness: 2.5 mm.
Total length: 220 mm.
Weight: 68 g.
Folders: Stainless Steel
Heads: Absent
Closure: Retention spring in brushed stainless steel
Clip: Absent
Sheath: Absent

Intended use: Tactical / Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: CPM-20CV stainless steel
Blade treatment: Black DLC
Handle: Titanium Black DLC and G10
Blade length: 89mm.
Blade thickness: 4mm.
Length closed: 128mm.
Total length: 218mm.
Thick when closed: 14mm
Weight: 134g.
Closure: Framelock
Clip: Removable, reversible, in stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Tim Galyean - KVT opening on ball bearings - Carson Flipper opening system

Intended use: Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: CPM-20CV stainless steel
Blade treatment: Black DLC
Handle: Black DLC Titanium
Blade length: 95mm.
Blade thickness: 4mm.
Length closed: 127mm.
Total length: 222mm.
Thick when closed: 14mm
Weight: 141g.
Closure: Framelock
Clip: Removable, reversible, in titanium
Packaging: cardboard box with Zero Tolerance logos
Notes: "Sprint Run" Limited Edition available while stocks last - Design by Gustavo T. Cecchini by GTC Knives - KVT opening on ball bearings - SLT Spring Loaded Tab opening system

Knife made by hand according to the tradition of the French cutlery of Thiers that ensures the absence of manufacturing defects under normal use.

Blade: 12C27 Swedish steel with 54HRC satin finish.
Handle: in olive wood
Blade length: 105 mm.
Blade thickness: 4 mm.
Total length: 240 mm.
Weight: 160 g.
Closure: spring
Sheath: -
Note:

Intended use: Sports / Tactical

Type of production: Industrial
Country of production: U.S.A.
Blade: CPM-20CV stainless steel
Blade treatment: coated & machine satin finish
Handle: Black carbon fiber with aluminum spacers
Blade length: 95mm.
Blade thickness: 4mm.
Length closed: 126mm.
Total length: 221mm.
Thick when closed: -
Weight: 122g.
Closure: Sub Framelock in hardened steel
Clip: Removable, in titanium
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Sinkevich & Rexford

use: Sportive / Tactical / Collection

Type of production: Industrial
Country of production: U.S.A.
Blade: S35VN stainless steel
Blade treatment: Black Tungsten DLC
Handle: Titanium with purble anodizing
Blade length: 86mm.
Blade thickness: 3mm.
Closed length: 108mm.
Total length: 191mm.
Thick when closed: 11.5mm.
Weight: 95g.
Opening: Carson Flipper system
Washers: in steel, with KVT ball bearings
Closure: FrameLock
Clip: stainless steel, removable and reversible
Packaging: Cardboard box with Zero Tolerance logos
Notes: Design by R.J. Martin & Matt Martin - Sprint Run Edition 2019 available while stocks last

Intended use: Tactical / Military

Type of production: Industrial
Lama production: USA
Blade: CPM-20CV stainless steel
Blade treatment: Black DLC
Handle: Titanium with Black DLC and G-10 treatment
Blade length: 90mm.
Blade thickness: 4mm.
Length closed: 113mm.
Total length: 206mm.
Thick when closed: 12mm.
Weight: 160g.
Closure: Frame Lock
Clip: Removable, Multiposition, made of stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Rick Hinderer - Ball bearing opening KVT Ball Bearing System - Opening by Carson Flipper system

Intended use: Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: CPM-20CV stainless steel
Blade treatment: Satin
Handle: Titanium
Blade length: 83mm.
Blade thickness: 3mm.
Length closed: 112mm.
Total length: 191mm.
Thickness when closed: -
Weight: 80g.
Closure: Framelock
Clip: Removable, made of stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: KVT opening on ball bearings - Carson Flipper opening system - Sprint Run 2019 edition available while stocks last

Intended use: Sports / Tactical

Type of production: Industrial
Country of production: USA
Blade: CPM S35VN stainless steel
Blade treatment: Satin
Handle: G10 Tan
Blade length: 83mm.
Blade thickness: 4mm.
Length closed: 133mm.
Total length: 225mm.
Weight: 110g.
Closure: Framelock
Clip: Removable and reversible, in stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Dmitry Sinkevich - KVT opening on ball bearings - Carson Flipper opening system - Limited Sprint Run series

Intended use: Regional / Collection
Type of production: handmade
Blade: Japanese "sanmai" laminated steel with external damask cheeks and VG10 to 61HRC cutting edge
Country of production: France
Handle: Camel bone
Blade length: 100mm.
Blade thickness: 3mm.
Length closed: 120mm.
Total length: 220mm.
Weight: 104g.
Closure: back retention spring
Clip: absent
Sheath: absent

Intended use: Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: CPM-20CV stainless steel
Blade treatment: stone washed and satin finish
Handle: Titanium with green carbon fiber insert
Blade length: 96mm.
Blade thickness: 4mm.
Length closed: 121mm.
Total length: 216mm.
Weight: 125g.
Closing: FrameLock with stainless steel knocker
Clip: Stainless steel. removable and reversible
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Ernest Emerson - Opening by Thumb Disk

Intended use: Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: CPM-20CV stainless steel
Blade treatment: stone washed and satin finish
Handle: Carbon Fiber and Titanium with anodized spacers
Blade length: 87mm.
Blade thickness: 4mm.
Length closed: 112mm.
Total length: 193mm.
Thick when closed: 14mm.
Weight: 139g.
Closure: Framelock
Clip: Removable, reversible, stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: Sprint Run edition available while stocks last - Design by Dmirty Sinkevich - KVT opening on ball bearings

Intended use: Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: CPM-20CV stainless steel
Blade treatment: blackwash
Handle: Titanium
Blade length: 95mm.
Blade thickness: 4mm.
Length closed: 127mm.
Total length: 222mm.
Thickness when closed: -
Weight: 141g.
Closure: Framelock
Clip: Removable, reversible, in titanium
Packaging: cardboard box with Zero Tolerance logos
Notes: Sprint Run Edition available while stocks last - Design by Gustavo T. GTC Knives Coppers - KVT opening on ball bearings - SLT opening system Spring Loaded Tab

Intended use: Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: CPM-20CV stainless steel
Blade treatment: stone washed and satin finish
Handle: Titanium with marbled carbon fiber insert
Blade length: 86mm.
Blade thickness: 3mm.
Length closed: 112mm.
Total length: 198mm.
Weight: 95g.
Closing: FrameLock with stainless steel knocker
Clip: Stainless steel. removable and reversible
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Dmirty Sinkevich - KVT opening on ball bearings - Carson Flipper opening system

Intended use: Tactical / Military

Type of production: Industrial
Country of production: USA
Blade: CPM-S35VN stainless steel
Blade treatment: Blackwash
Handle: Blackwash Titanium and White and Black Carbon Fiber
Blade length: 104mm.
Blade thickness: 4mm.
Length closed: 131mm.
Total length: 235mm.
Thick when closed: 13mm.
Weight: 132g.
Closure: FrameLock
Clip: stainless steel, removable and multiposition
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Dmitry Sinkevich - KVT opening on ball bearings - Opening by Carson Flipper system - Limited edition of Sprint Run

Intended use: Sports / Collection

Type of production: Industrial
Country of production: USA
Blade: Stainless steel CPM-S35VN 59 / 61HRC
Blade treatment: Black DLC
Handle: Titanium with DLC treatment
Blade length: 80mm.
Blade thickness: 4mm.
Length closed: 111mm.
Total length: 190mm.
Weight: 126g.
Closing: FrameLock with stainless steel knocker
Clip: stainless steel, removable and multiposition
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Todd Rexford - KVT opening on ball bearings - Limited edition Sprint Run

Intended use: Sports / Tactical / Collection

Type of production: Industrial
Country of production: USA
Blade: S35VN stainless steel
Blade treatment: Black Tungsten DLC
Handle: Anodized Titanium
Blade length: 86mm.
Blade thickness: 3mm.
Length closed: 108mm.
Total length: 191mm.
Thick when closed: 11.5mm.
Weight: 95g.
Opening: Carson Flipper system
Washers: in steel, with KVT ball bearings
Closure: FrameLock
Clip: stainless steel, removable and reversible
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by R.J. Martin & Matt Martin - Sprint Run 2018 edition available while stocks last

Intended use: Sports / Tactical

Type of production: Industrial
Country of production: USA
Blade: CPM-S90V stainless steel
Blade treatment: Tan DLC
Handle: titanium with matt black DLC treatment
Blade length: 99mm.
Blade thickness: 3mm.
Length closed: 123mm.
Total length: 213mm.
Thick when closed: 12mm.
Weight: 152g.
Closure: Framelock
Clip: Removable, reversible, stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: KVT opening on ball bearings - Carson Flipper opening system - Sprint Run 2018 edition available while stocks last

Intended use: Collection / Sports

Type of production: artisan
Country of production: Laguiole, France
Blade: Sandvik 12C27 stainless steel
Blade treatment: Satin
Handle: Boxwood
Blade length: 82mm.
Blade thickness: 2.4mm.
Length closed: 111mm.
Total length: 193mm.
Weight: 53g.
Opening: manual, two-handed
Closure: simple spring
Clip: -
Sheath: -
Notes: always accompany the blade during closing to prevent the thread from beating and ruining