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ExtremaRatio - Police I knife - Multi-purpose 2 blades - PRIVATE COLLECTION - knife
KNIFE RETIRED FROM PRIVATE COLLECTION
* Type: Previously Purchased
* Condition: In very good condition
* Commercially available NO
* Sharpness: Original
* Marks on blade: NO
* Marks on handle: NO
* Packaging: YES
* Checked and Certified by our internal laboratoryType of production: Industrial
Country of production: Italy
Blade: in N690Co stainless steel
Finish: Testudo burnishing
Handle: Anodized aeronautical aluminum anticorodal
Blade length: 85mm.
Blade thickness: 2.5mm.
Total length: 210mm.
Weight: 152g.
Sheath: -
Packaging: Cardboard box with Extrema Ratio logos and manufacturer's certificates
Notes: emergency blade with snap opening (length. 8 cm) - glass breaker - model from 2013 now out of productionER-AP-POLICE -
Antonini knives - Old Bear knife in SanMai VG10 a 67 layers - 23cm - multilayer black - Limited Edition
Antonini artisans from Maniago have created an exclusive and limited series of OLD BEAR knives using the famous Japanese SANMAI steel in VG10 with 67 layers. This beautiful project combines the tradition of a successful knife, patented and built in Italy, with the history and qualitative excellence of Japanese steel, made with a production process that dates back to that used for the famous Japanese swords.
The thickness of the blade goes from 2 mm of the standard models to 2.5 mm of this exclusive series, in order to make the knife more robust and performing.
To make the knife even more exclusive, for each of the three sizes offered, 60 exclusive pieces have been created, with progressive numbering engraved on the blade
Type of production: semi-artisanal
Production Lama: Italy
Blade: San Mai 67 VG10 damask stainless steel (60/61 HRC)
Handle: in plywood with satin brass ring with nickel plating
Blade length: 100mm.
Blade thickness: 2.5mm.
Closed length: 127mm.
Thick when closed: 22mm.
Total length: 225mm.
Weight: 68g.
Closure: viro blockThe handles are made of Italian olive wood. Being a model without return spring, the fixing of the blade to the handle is ensured by a solid safety ring in nickel plated brass equipped with a special locking device (covered by patent n. active partner of this project) which can be activated both in the open and in the closed position.
As early as 1100, expert Japanese blacksmiths combined different materials together to give Katana swords cutting, strength and flexibility previously unknown. Inspired by this tradition, Berkel has created a series of Japanese SanMai steel knives.
The blade consists of a core layer of extremely hard VG-10 steel, which keeps it sharp for a long time, and two outer plates made of 33-layer damask stainless steel per side, for greater resistance to corrosion and torsion.
Characteristics of SanMai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals individually taken:
- Longer life of the cutting edge
thanks to the use of very high quality steels with high carbon content (VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade, once hardened, achieves decidedly hardness and cutting performance higher than those achieved with the use of traditional steels.- Greater resilience
built with the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the side facing (Stainless Steel).- Better corrosion resistance
the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, at the galvanic level, a structure that improves the corrosion resistance even on the wire.- Easy processing even after heat treatment
although steel normally becomes harder after hardening, the lateral steel used in multilayer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For an optimal performance of the blade, cryogenic treatment is recommended.- Improvement of the aesthetic result
The knives made with multi-state steel or damascus pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.For more information: Collini Steel
AE-9305/23_MNK -
Antonini knives - Old Bear knife in SanMai VG10 at 67 layers - 21cm - olive tree - Limited Edition
Antonini artisans from Maniago have created an exclusive and limited series of OLD BEAR knives using the famous Japanese SANMAI steel in VG10 with 67 layers. This beautiful project combines the tradition of a successful knife, patented and built in Italy, with the history and qualitative excellence of Japanese steel, made with a production process that dates back to that used for the famous Japanese swords.
The thickness of the blade goes from 2 mm of the standard models to 2.5 mm of this exclusive series, in order to make the knife more robust and performing.
To make the knife even more exclusive, for each of the three sizes offered, 60 exclusive pieces have been created, with progressive numbering engraved on the blade
Type of production: semi artisanal
Production Lama: Italy
Blade: San Mai 67 VG10 damask stainless steel (60/61 HRC)
Handle: olive wood
Blade length: 90mm.
Blade thickness: 2.5mm.
Closed length: 120mm.
Thick when closed: 22mm.
Total length: 212mm.
Weight: 65g.
Closure: viro blockThe handles are made of Italian olive wood. Being a model without return spring, the fixing of the blade to the handle is ensured by a solid brass safety ring equipped with a special locking device (covered by patent n. of this project) which can be activated both in the open position and in the closed position.
As early as 1100, expert Japanese blacksmiths combined different materials together to give Katana swords cutting, strength and flexibility previously unknown. Inspired by this tradition, Berkel has created a series of Japanese SanMai steel knives.
The blade consists of a core layer of extremely hard VG-10 steel, which keeps it sharp for a long time, and two outer plates made of 33-layer damask stainless steel per side, for greater resistance to corrosion and torsion.
Characteristics of SanMai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals individually taken:
- Longer life of the cutting edge
thanks to the use of very high quality steels with high carbon content (VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade, once hardened, achieves decidedly hardness and cutting performance higher than those achieved with the use of traditional steels.- Greater resilience
built with the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the side facing (Stainless Steel).- Better corrosion resistance
the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, at the galvanic level, a structure that improves the corrosion resistance even on the wire.- Easy processing even after heat treatment
although steel normally becomes harder after hardening, the lateral steel used in multilayer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For an optimal performance of the blade, cryogenic treatment is recommended.- Improvement of the aesthetic result
The knives made with multi-state steel or with a damascus pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.For more information: Collini Steel
AE-9305/21_LU -
Antonini knives - Old Bear knife in SanMai VG10 at 67 layers - 19cm - walnut - Limited Edition
Antonini artisans from Maniago have created an exclusive and limited series of OLD BEAR knives using the famous Japanese SANMAI steel in VG10 with 67 layers. This beautiful project combines the tradition of a successful knife, patented and built in Italy, with the history and qualitative excellence of Japanese steel, made with a production process that dates back to that used for the famous Japanese swords.
The thickness of the blade goes from 2 mm of the standard models to 2.5 mm of this exclusive series, in order to make the knife more robust and performing.
To make the knife even more exclusive, for each of the three sizes offered, 60 exclusive pieces have been created, with progressive numbering engraved on the blade
Type of production: semi artisanal
Production Lama: Italy
Blade: San Mai 67 VG10 damask stainless steel (60/61 HRC)
Handle: in walnut wood
Blade length: 80mm.
Blade thickness: 2.5mm.
Closed length: 109mm.
Thick when closed: 22mm.
Total length: 190mm.
Weight: 46g.
Closure: viro blockThe handles are made of antique and oiled walnut wood. Being a model without return spring, the fixing of the blade to the handle is ensured by a solid brass safety ring equipped with a special locking device (covered by patent n.1187282 filed again in 1985 by the Todesco company of Maniago which is an active partner of this project) which can be activated both in the open position and in the closed position.
As early as 1100, expert Japanese blacksmiths combined different materials together to give Katana swords cutting, strength and flexibility previously unknown. Inspired by this tradition, Berkel has created a series of Japanese SanMai steel knives.
The blade consists of a core layer of extremely hard VG-10 steel, which keeps it sharp for a long time, and two outer plates made of 33-layer damask stainless steel per side, for greater resistance to corrosion and torsion.
Characteristics of SanMai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals individually taken:
- Longer life of the cutting edge
thanks to the use of very high quality steels with high carbon content (VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade, once hardened, achieves decidedly hardness and cutting performance higher than those achieved with the use of traditional steels.- Greater resilience
built with the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the side facing (Stainless Steel).- Better corrosion resistance
the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, at the galvanic level, a structure that improves the corrosion resistance even on the wire.- Easy processing even after heat treatment
although steel normally becomes harder after hardening, the lateral steel used in multilayer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For an optimal performance of the blade, cryogenic treatment is recommended.- Improvement of the aesthetic result
The knives made with multi-state steel or with a damascus pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.For more information: Collini Steel
AE-9305/19_LN -
ExtremaRatio - BD0 R - Desert - Stone Washed - knife
It is a small basic folder, produced with a technopolymer handle that enhances its resistance and lightness, thanks also to the steel frame. The blade locking mechanism is the tried and tested LINER-LOCK. The model maintains all the features of the previous BF0 model, updated with the new High Speed Razor Opening opening system and with a Sear Point blade.
Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Nylon with stainless steel folders
Blade length: 60mm.
Blade thickness: 2.5mm.
Length closed: 95mm.
Total length: 145mm.
Weight: 52g.
Closure: Liner Lock
Clip: reversible and removable, in stainless steelER-BD0R-DE -
ExtremaRatio - BD0 R - Ranger Green - Stone Washed - knife
It is a small basic folder, produced with a technopolymer handle that enhances its resistance and lightness, thanks also to the steel frame. The blade locking mechanism is the tried and tested LINER-LOCK. The model maintains all the features of the previous BF0 model, updated with the new High Speed Razor Opening opening system and with a Sear Point blade.
Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Nylon with stainless steel folders
Blade length: 60mm.
Blade thickness: 2.5mm.
Length closed: 95mm.
Total length: 145mm.
Weight: 52g.
Closure: Liner Lock
Clip: reversible and removable, in stainless steelER-BD0R-RG -
ExtremaRatio - BD0 R - HCS - Stone Washed - knife
It is a small basic folder, produced with a technopolymer handle that enhances its resistance and lightness, thanks also to the steel frame. The blade locking mechanism is the tried and tested LINER-LOCK. The model maintains all the features of the previous BF0 model, updated with the new High Speed Razor Opening opening system and with a Sear Point blade.
Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Nylon with stainless steel folders
Blade length: 60mm.
Blade thickness: 2.5mm.
Length closed: 95mm.
Total length: 145mm.
Weight: 52g.
Closure: Liner Lock
Clip: reversible and removable, in stainless steelER-BD0R-HC -
ExtremaRatio - BD0 R - Black - Stone Washed - knife
It is a small basic folder, produced with a technopolymer handle that enhances its resistance and lightness, thanks also to the steel frame. The blade locking mechanism is the tried and tested LINER-LOCK. The model maintains all the features of the previous BF0 model, updated with the new High Speed Razor Opening opening system and with a Sear Point blade.
Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Nylon with stainless steel folders
Blade length: 60mm.
Blade thickness: 2.5mm.
Length closed: 95mm.
Total length: 145mm.
Weight: 52g.
Closure: Liner Lock
Clip: reversible and removable, in stainless steelER-BD0R-BK -
ExtremaRatio - BF0 R CD HCS- Stone Washed - knife
It is a small basic folder, produced with a technopolymer handle that enhances its resistance and lightness, thanks also to the steel frame. The blade locking mechanism is the tried and tested LINER-LOCK. The model keeps all the features of the BF0 updated with the new High Speed Razor Opening opening system. Available in the following versions: BF0 R CD Desert with stone washed blade and HCS and BF0 R CD Stone Washed with stone washed blade and black grip.
Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Nylon with stainless steel folders
Blade length: 55mm.
Blade thickness: 2.5mm.
Length closed: 85mm.
Total length: 140mm.
Weight: 53g.
Closure: Liner Lock
Clip: reversible and removable, in stainless steelER-BF0R-HCS -
Aitor - Jungle King III - 16017 - Survival Knife
Intended use: Sport
Type of production: Industrial
Production Blade: Spain
Blade: 440C stainless steel
Treatment Lama: -
Handle: PVC
Blade length: 106mm.
Blade thickness: 2.5mm.
Length closed: -
Overall Length: 220mm.
Thick when closed: -
Balance: -
Weight: 120g.
Closing: -
Clip: -
Sheath: PVC and nylon sling and with tourniquet
Packaging: cardboard box with logos Aitor
Notes: compass and survival kit inside the handleAI-16017 -
ExtremaRatio - Police I knife - Multi-purpose 2 blades - knife
Intended use: Emergency and survival multi-purpose knife
Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel
Finish: Testudo burnishing
Handle: anticorodal anodized aluminum
Blade length: 85mm.
Blade thickness: 2.5mm.
Total length: 210mm.
Weight: 152g.
Sheath: -
Packaging: Cardboard box with Extrema Ratio logos and manufacturer's certificates
Notes: emergency blade with snap opening (length 8 cm) - window breaker - 2013 model now out of productionER-POLICE -
ExtremaRatio - BF0 R CD - Stone Washed - knife
It is a small basic folder, produced with a technopolymer handle that enhances its resistance and lightness, thanks also to the steel frame. The blade locking mechanism is the tried and tested LINER-LOCK. The model keeps all the features of the BF0 updated with the new High Speed Razor Opening opening system. Available in the following versions: BF0 R CD Desert with stone washed blade and HCS and BF0 R CD Stone Washed with stone washed blade and black grip.
Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Nylon with stainless steel folders
Blade length: 55mm.
Blade thickness: 2.5mm.
Length closed: 85mm.
Total length: 140mm.
Weight: 53g.
Closure: Liner Lock
Clip: reversible and removable, in stainless steelER-BF0R-SW -
ExtremaRatio - BF1CT - Damascus Coreless - Limited Edition - knife
Purpose of use: Collection / Sportsman
Type of production: Sprint Run, Industrial, Open Number
Country of production: Prato - Italy
Blade: Coreless Steel VG10 / VG2 61HRC made in Japan by Takefu Steel
Blade treatment: chemical detection
Handle: Anodized aluminum anticorodal
Blade Length: 70mm.
Blade thickness: 2.5mm.
Closed length: 99mm.
Total Length: 168mm.
Closure thickness: 11mm.
Weight: 84g.
Opening: ambidextrous opening pin
Washers: in fiberglass
Closure: Liner Lock
Clip: stainless steel, deep pocket, removable and reversible
Packing: Cardboard box with Extrema Ratio logos - Numbered guarantee certificate
Notes: Limited edition - Each specimen is numbered on the grip and on the internal warranty certificate - Exclusive Product of Coltelleria ColliniABOUT THE STEEL
More than just a damask, Coreless steel made by Japanese Takefu Steel comes with over 70 layers of VG10 and VG2 stainless steel welded, forged and coated between them so that you can form a lightweight, slim and durable blade with a spectacular damask outer pattern.
The peculiarity of Coreless steel, unlike conventional rolled steel or Japanese San-Mai, is that it does not have a hard core steel that is used for the cutting edge but has both the VG10 and VG2 steels arranged to form the cutting edge so alternating and sequential to each other.
This particular construction gives the blade - compared to the two steels that make it, individually taken - greater resistance to oxidation, higher surface hardness (up to 61.5HRC), 25% more than cutting capacity, 25% more than the wire hold capacity and 25% more resilience making the blade more robust and less subject to breakage.
Thanks to this latest steel, Takefu Steel has been rewarded on Japanese territory for research and development and innovation in the cutting-edge landscape. Coreless steel has already been chosen by major brands such as Kai and Mcusta Zanmai who since 2017 proposed it on their top productions of professional kitchen knives.
ER-BF1CT-C -
ExtremaRatio - BF1CD - Damascus Coreless - Limited Edition - knife
Purpose of use: Collection / Sportsman
Type of production: Sprint Run, Industrial, Open Number
Country of production: Prato - Italy
Blade: Coreless Steel VG10 / VG2 61HRC made in Japan by Takefu Steel
Blade treatment: chemical detection
Handle: Anodized aluminum anticorodal
Blade Length: 70mm.
Blade thickness: 2.5mm.
Closed length: 99mm.
Total Length: 168mm.
Closure thickness: 11mm.
Weight: 84g.
Opening: ambidextrous opening pin
Washers: in fiberglass
Closure: Liner Lock
Clip: stainless steel, deep pocket, removable and reversible
Packing: Cardboard box with Extrema Ratio logos - Numbered guarantee certificate
Notes: Limited edition - Each specimen is numbered on the grip and on the internal warranty certificate - Exclusive Product of Coltelleria ColliniABOUT THE STEEL
More than just a damask, Coreless steel made by Japanese Takefu Steel comes with over 70 layers of VG10 and VG2 stainless steel welded, forged and coated between them so that you can form a lightweight, slim and durable blade with a spectacular damask outer pattern.
The peculiarity of Coreless steel, unlike conventional rolled steel or Japanese San-Mai, is that it does not have a hard core steel that is used for the cutting edge but has both the VG10 and VG2 steels arranged to form the cutting edge so alternating and sequential to each other.
This particular construction gives the blade - compared to the two steels that make it, individually taken - greater resistance to oxidation, higher surface hardness (up to 61.5HRC), 25% more than cutting capacity, 25% more than the wire hold capacity and 25% more resilience making the blade more robust and less subject to breakage.
Thanks to this latest steel, Takefu Steel has been rewarded on Japanese territory for research and development and innovation in the cutting-edge landscape. Coreless steel has already been chosen by major brands such as Kai and Mcusta Zanmai who since 2017 proposed it on their top productions of professional kitchen knives.
ER-BF1CD-C -
ExtremaRatio - BF0CD - Stone Washed - knife
Type of production: Industrial
Blade: N690Co 58HRC stainless steel
Country of production: Italy
Handle: Nylon
Blade length: 55mm.
Blade Thickness: 2.5mm.
Closed Length: 85mm.
Overall length: 140mm.
Weight: 75g.
locking system: Liner Lock
Clip: reversible and removable, stainless steelER-BF0-SW