Knives, collection knife, tactical knives, outdoor knives, pocket knives and tools
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Kershaw - Frontrunner - KVT Flipper - 2039 - knife
Intended Use: Sporting
Production type: Industrial
Country of Production: China
Blade: D2 steel
Blade treatment: Stonewashed
Handle: Stainless steel and G10
Blade length: 74mm.
Blade thickness: 3.1mm.
Length closed: 109mm.
Total length: 183mm.
Thickness when closed: 13mm.
Weight: 119g.
Opening: rapid Carson Flipper system
Washers: with KVT ball bearings
Closure: FrameLock
Clip: deep pocket, stainless steel, removable
Packaging: cardboard box with Kershaw logos
Notes: Opening via Carson-flipper system on KVT ball bearingsK2039 -
Kershaw - Highball XL KVT Knife - 7020 - D2 steel - knife
Intended use: Sports
Type of production: Industrial
Country of production: China
Blade: D2 steel
Blade treatment: Stonewashed
Handle: Stainless steel with Stonewashed and G10 finish
Blade length: 84mm.
Blade thickness: 3mm.
Closed length: 110mm.
Total length: 190mm.
Weight: 108g.
Opening: KVT Bearings system
Washers: in reversible steel
Closure: Frame Lock
Clip: in stainless steel, removable and reversible
Packaging: Cardboard box with Kershaw logos
Note: -K7020 -
Kershaw - Tumbler Flipper by Sinkevich - 4038 - knife
Intended use: Sports
Type of production: Industrial
Country of production: China
Blade: in steel D2
Blade treatment: Stonewashed
Handle: G10 and Carbon Fiber
Blade length: 83mm.
Blade thickness: 3mm.
Length closed: 114mm.
Total length: 187mm.
Thick when closed: 11mm.
Weight: 75g.
Opening: Carson Flipper system
Washers: in steel, with ball bearings
Closing: Sub Frame Lock
Clip: stainless steel, removable and reversible
Packaging: Cardboard box with Kershaw logos
Notes: Design by SinkevichK4038 -
Kershaw - Oblivion SpeedSafe Frame Flipper - 3860 - knife
Intended use: Sports
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment: Stonewashed
Handle: Stainless steel with Stonewashed and G10 finish
Blade length: 90mm.
Blade thickness: 3mm.
Length closed: 118mm.
Total length: 206mm.
Thick when closed: 10.2mm.
Weight: 146g.
Opening: Carson Flipper system and SpeedSafe Assisted Opening
Washers: steel,
Closure: Frame Lock
Clip: stainless steel, removable and reversible
Packaging: Cardboard box with Kershaw logos
Note: -K3860 -
Kershaw - Innuendo Frame by Les George - 3440 - knife
Intended use: Sports
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment: Gray TiNi
Handle: Stainless steel with bead-blasted finish
Blade length: 85mm.
Blade thickness: 3mm.
Length closed: 108mm.
Total length: 191mm.
Thick when closed: 10mm.
Weight: 127g.
Opening: through ambidextrous opening disc placed on the blade
Washers: in Teflon
Closure: Frame Lock
Clip: stainless steel, removable and reversible, with Gray TiNi treatment
Packaging: Cardboard box with Kershaw logos
Notes: Design by Les GeorgeK3440 -
Kershaw - Decibel Frame Knife - 2045 - knife
Intended use: Sports
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment: Matte Gray TiNi
Handle: Stainless steel with Matte Gray TiNi finish
Blade length: 74mm.
Blade thickness: 2.5mm.
Length closed: 94mm.
Total length: 178mm.
Thick when closed: 15mm.
Weight: 83g.
Opening: through ambidextrous opening pin placed on the blade
Washers: in Teflon
Closure: Frame Lock
Clip: stainless steel, removable and reversible, with PVD treatment
Packaging: Cardboard box with Kershaw logos
Note: -K2045 -
Kershaw - Parsec Frame Flipper - 2035 - knife
Intended use: Sports
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment: Stonewashed Brown PVD
Handle: Stainless steel with Stonewashed Brown PVD finish
Blade length: 7.6mm.
Blade thickness: 3mm.
Length closed: 105mm.
Total length: 182mm.
Thick when closed: 10.2mm.
Weight: 99g.
Opening: Carson Flipper system
Washers: in steel, with ball bearings
Closure: Frame Lock
Clip: stainless steel, removable and reversible, with PVD treatment
Packaging: Cardboard box with Kershaw logos
Note: -K2035 -
Kershaw - Reverb XL - 1225 - knife
Intended use: sports
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment: titanium carbo-nitride coating
Handle: G10 and carbon fiber with stainless steel frame
Blade length: 76mm.
Blade thickness: 2.8mm.
Closed length: 109mm.
Total length: 187mm.
Thick when closed: 9.9mm.
Weight: 62.4g.
Washers: in brass
Closure: Framelock
Clip: deep carry type, stainless steel, removable and reversible
Packaging: Cardboard box with Kershaw logos
Notes: Carabiner / bottle opener integrated on the shankK1225 -
Kershaw - Antic Karambit Style Grip - 8710 - knife
Intended use: Sports / EDC
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment: Bead Blasted
Handle: Stainless steel with PVD treatment
Blade length: 47mm.
Blade thickness: 2.8mm.
Closed length: 96mm.
Total length: 140mm.
Thick when closed: 8.7mm.
Weight: 90g.
Opening: through ambidextrous thumstood
Washers: in Teflon
Closure: Frame Lock
Clip: stainless steel, removable
Sheath: -
Packaging: Cardboard box with Kershaw logos
Notes: bottle opener and screwdriverK8710 -
Leatherman - Skeletool KB - folding knife
Intended use: Sports
Type of production: Industrial
Country of production: USA
Blade: 420HC stainless steel
Blade treatment: Satind
Handle: 6061-T6 aluminum
Blade length: 66mm.
Blade thickness: 2.6mm.
Length closed: 87mm.
Overall length: 151mm.
Thick when closed: 11mm.
Balancing: -
Weight: 38g.
Opening: hole on the blade
Washers: in brass
Closure: Liner Lock
Clip: stainless steel, removable, with the function of a bottle opener
Sheath: -
Packaging: Cardboard box with Leatherman logos
Note: -LE832385 -
EOS Elite Outfitting Solutions - Prawn Friction Folder Aluminum Blue - knives
Intended use: Tactical / EDC / Collection
Type of production: semi-handmade
Country of production: USA
Blade: CPM S35VN steel
Blade treatment: -
Handle: aluminum
Blade length: 68mm.
Blade thickness: 4mm.
Length closed: 83mm.
Total length: 135mm.
Thick when closed: 12mm.
balancing:
Weight: 68 gr.
Opening: -
Washers: -
Closure: Friction Folder (without block)
Clip: titanium, removable
Packaging: nylon bag with EOS logos
Note: -EOS-P-A-B -
Kershaw - Emerson CQC-11K Wave Framelock - 6031 - knife
Intended use: Tactical / EDC
Type of production: industrial
Blade: 8Cr14MoV stainless steel
Blade Treatment: Stone Washed
Blade production: China
Handle: Stainless Steel and G10
Blade Length: 90mm.
Blade thickness: 3mm.
Closed length: 121mm.
Total length: 216mm.
Thickness of handle: 10mm.
Weight: 166g.
Closure: Frame Lock
Clip: removable and reversible, stainless steel
Sheath: -
Notes: Opening through a Wave system or with a spacer opening (removable) - Design by Ernest R. EmersonK6030 -
EOS Elite Outfitting Solutions - Orca S - Grey Titanium - knife
Target: Tactical / EDC / Collection
Type of production: artisanal seed
Country of production: U.S.A.
Blade: Steel CPM S35VN
Blade treatment: -
Handle: Anodized titanium with thickness of mm per folder
Blade Length: 68mm.
Blade thickness: 4mm.
Closed length: 99mm.
Total Length: 175mm.
Closed thickness: 13mm.
balancing:
Weight:
Opening: Flipper
Washers: Steel ball bearings
Closure: Framelock
Clip: Titanium, Removable
Packing: nylon bag with EOS logos
Notes: -EOS-ORG -
Kershaw - Hinderer Cryo Flipper Frame G10 - 1555G10 - knife
Intended use: Sport / Tactical / EDC
Type of production: industry
Blade: stainless steel 8Cr13MoV
Treatment Blade: Stonewashed
Production Lama: China
Handle: Stainless steel stonewashed and G10
Blade length: 70mm.
Blade Thickness: 3mm.
Closed Length: 95mm.
Overall length: 165mm.
Balancing: -
Weight: 105g.
Closure: Frame Lock
Clip removable and multi, Teflon-coated stainless steel
Sheath: -
Notes: Design by Rick HindererK1555G10 -
Kershaw - Emerson E-Train Framelock - 6034T - knife
Intended use: Tactical / EDC
Type of production: industrial
Blade: 8Cr14MoV stainless steel
Treatment Lama: -
Production Lama: China
Handle: Stainless steel and G10
Blade length: 83mm.
Blade Thickness: 3mm.
Closed Length: 114mm.
Overall length: 197mm.
Balancing: -
Weight: 144g.
Closure: Frame Lock
Clip: removable and reversible, stainless steel
Sheath: -
Notes: Design by Ernie EmersonK6034TR -
Kershaw - Emerson CQC-6K Framelock - knife
Intended use: Tactical / EDC
Type of production: industrial
Blade: 8Cr14MoV stainless steel
Treatment Lama: -
Production Lama: China
Handle: Stainless steel and G10
Blade length: 83mm.
Blade Thickness: 3mm.
Closed Length: 114mm.
Overall length: 197mm.
Balancing: -
Weight: 144g.
Closure: Frame Lock
Clip: removable and reversible, stainless steel
Sheath: -
Notes: Design by Ernie EmersonK6034D2 -
Kershaw - Emerson CQC-7K Framelock - knife
Intended use: Tactical / EDC
Type of production: industrial
Blade: 8Cr14MoV stainless steel
Treatment Lama: -
Production Lama: China
Handle: Stainless steel and G10
Blade length: 83mm.
Blade Thickness: 3mm.
Closed Length: 114mm.
Overall length: 197mm.
Balancing: -
Weight: 144g.
Closure: Frame Lock
Clip: removable and reversible, stainless steel
Sheath: -
Notes: Design by Ernie EmersonK6034T -
Kershaw - Iridium - DuraLock KVT Knife - 2038 - knife
Intended Use: Sporting
Production type: Industrial
Country of Production: China
Blade: D2 steel
Blade treatment: Satin finish
Handle: Anodized aluminum
Blade length: 81mm.
Blade thickness: 2.7mm.
Length closed: 114mm.
Total length: 200mm.
Thickness when closed: 12.5mm.
Weight: 94g.
Opening: via ambidextrous pins placed on the blade
Washers: with KVT ball bearings
Closure: DuraLock
Clip: deep pocket, stainless steel, removable and reversible
Packaging: cardboard box with Kershaw logos
Notes: Opens on KVT ball bearings - Uses new patented DuraLock locking system (similar to the AxisLock system used by Benchmade on its folder models)K2038 -
Kershaw - Heist - DuraLock KVT - 2037 - knife
Intended Use: Sporting
Production type: Industrial
Country of Production: China
Blade: D2 steel
Blade treatment: Stonewashed
Handle: GRN (Glass Reinforced Nylon)
Blade length: 81mm.
Blade thickness: 2.3mm.
Length closed: 112mm.
Total length: 193mm.
Thickness when closed: 11.7mm.
Weight: 79g.
Opening: via ambidextrous pins placed on the blade
Washers: with KVT ball bearings
Closure: DuraLock
Clip: deep pocket, stainless steel, removable and reversible
Packaging: cardboard box with Kershaw logos
Notes: Opens on KVT ball bearings - Uses new patented DuraLock locking system (similar to the AxisLock system used by Benchmade on its folder models)K2037 -
TB Outdoor - C.A.C. fixed training - 10590008 - training knife
Equipped with a balance in all respects identical to that of the C.A.C® folding knife, this training knife with a fixed blade does not cut and has a round tip. No accidental injury is possible. The blade is however made of hardened stainless steel so that it can be used in all circumstances.
Intended use: training
Blade: stainless steel
Handle: in ABS
Blade length: 90mm.
Blade thickness: 3mm.
Total length: 230mm.
Weight: 158g.
Sheath: -
Notes: Philippe Perotti design10590008 -
Kershaw - Fraxion knife by Anso - Tan - 1160TAN - knife
Intended use: Tactical / Sports
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment:
Handle: G10 and Carbon Fiber
Blade length: 70mm.
Blade thickness: 2.7mm.
Closed length: 103mm.
Total length: 171mm.
Thick when closed: 9.7mm.
Balancing: -
Weight: 54g.
Opening: Carson Flipper system
Washers: in brass, with ball bearings
Closure: Liner Lock
Clip: in stainless steel, removable and reversible
Sheath: -
Packaging: Cardboard box with Kershaw logos
Notes: Design by Jens AnsoK1160TAN -
Kershaw - Lucha Bali - Clip Point Stainless Steel - 5150 - knife
*** ATTENTION: PAYMENT OF THIS ITEM CANNOT BE MADE WITH PAYPAL ***
Intended use: sports
Type of production: Industrial
Country of production: USA
Blade: Sandvik 14C28N stainless steel
Blade treatment: Stonewashed
Handle: Stainless steel
Blade length: 117mm.
Blade thickness: 4mm.
Length closed: 150mm.
Total length: 260mm.
Weight: 168g.
Closing: T-latch
Clip: Absent
Sheath: Absent
Packaging: Cardboard box with Kershaw logos
Notes: Movement on KVT ball bearingsK5150 -
Kershaw - Mixtape G10 Liner Knife - 2050 - knife
Intended use: Sports
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment: Stonewashed
Handle: G10 with steel folders
Blade length: 86mm.
Blade thickness: 2.5mm.
Length closed: 104mm.
Total length: 181mm.
Thick when closed: 16mm.
Weight: 75g.
Opening: through ambidextrous opening disc placed on the blade
Washers: in brass
Closure: Liner Lock
Clip: stainless steel, with stonewashed treatment
Packaging: Cardboard box with Kershaw logos
Note:K2050 -
Museum Replicas Windlass - Sgian Dubh 400910 Scottish knife - knife collection
The Sgian Dubh is a ceremonial dagger knife (in sgian Gaelic) worn as part of the modern Scottish Highland dress, along with the kilt.
It is worn tucked into socks, with only the knob visible.Intended use: sports / collection
Type of production: artisanal
Country of production: India
Blade: 1055 carbon steel
Blade treatment: -
Handle: in engraved wood with fittings
Blade length: 82mm.
Blade thickness: 2.5mm.
Total length: 170mm.
Weight: 46g.
Sheath: in wood and leather
Packaging: -
Note: -400910 -
Museum Replicass Windlass - Primitive Bowie Knife - 400884 - knife
Intended use: sports / collection / hunting
Type of production: Semi-Industrial
Lama production: India
Blade: 1065 carbon steel
Handle: brown wood
Blade length: 300mm.
Blade thickness: 4.5mm.
Total length: 465mm.
Balancing: 5 cm advanced
Weight: 542g.
Sheath: in brown leather
Packaging: cardboard box400884 -
Kershaw - Atmos by Sinkevich - Flipper Knife - 4037 - knife
Intended use: Tactical / Sports
Type of production: Industrial
Country of production: China
Blade: 8Cr13MoV stainless steel
Blade treatment: Satin
Handle: G10 and carbon fiber
Blade length: 76mm.
Blade thickness: 2.7mm.
Length closed: 102mm.
Total length: 175mm.
Thick when closed: 11mm.
Weight: 53.9g.
Opening: Carson Flipper system
Washers: Teflon, with ball bearings
Closure: Liner Lock
Clip: stainless steel, removable, reversible, deep pocket type
Packaging: Cardboard box with Kershaw logos
Notes: Design by SinkevichK4037 -
Kershaw - Bareknuckle Flipper Folder - 7777 - knife
Intended use: Sports / Tactical
Type of production: Industrial
Country of production: USA
Blade: Sandvik 14C28N stainless steel
Blade treatment: Stonewashed
Handle: 6061-T6 anodised aeronautical aluminum
Blade length: 89mm.
Blade thickness: 3mm.
Length closed: 118mm.
Total length: 207mm.
Thick when closed: 11.5mm.
Weight: 96.4g.
Closure: Sub FrameLock
Clip: Removable and multiposition, in stainless steel
Packaging: cardboard box with Kershaw logos
Notes: Carson Flipper opening systemK7777 -
EOS Elite Outfitting Solutions - Prawn Friction Folder Aluminum Tanto - knife
Intended use: Tactical / EDC / Collection
Type of production: semi-handmade
Country of production: USA
Blade: CPM S35VN steel
Blade treatment: -
Handle: aluminum
Blade length: 68mm.
Blade thickness: 4mm.
Length closed: 83mm.
Total length: 135mm.
Thick when closed: 12mm.
balancing:
Weight: 68 gr.
Opening: -
Washers: -
Closure: Friction Folder (without block)
Clip: titanium, removable
Packaging: nylon bag with EOS logos
Note: -EOS-P-A-T -
EOS Elite Outfitting Solutions - Prawn Friction Folder Aluminum Black - knife
Intended use: Tactical / EDC / Collection
Type of production: semi-handmade
Country of production: USA
Blade: CPM S35VN steel
Blade treatment: -
Handle: aluminum
Blade length: 68mm.
Blade thickness: 4mm.
Length closed: 83mm.
Total length: 135mm.
Thick when closed: 12mm.
balancing:
Weight: 68 gr.
Opening: -
Washers: -
Closure: Friction Folder (without block)
Clip: titanium, removable
Packaging: nylon bag with EOS logos
Note: -EOS-P-A-BK -
EOS Elite Outfitting Solutions - Prawn Friction Folder Tanto Carbon/Aluminum - knife
Intended use: Tactical / EDC / Collection
Type of production: semi-handmade
Country of production: USA
Blade: CPM S35VN steel
Blade treatment: -
Handle: carbon fiber and aluminum
Blade length: 68mm.
Blade thickness: 4mm.
Length closed: 83mm.
Total length: 135mm.
Thick when closed: 12mm.
balancing:
Weight: 68 gr.
Opening: -
Washers: -
Closure: Friction Folder (without block)
Clip: titanium, removable
Packaging: nylon bag with EOS logos
Note: -EOS-P-CF-AL-T -
EOS Elite Outfitting Solutions - Prawn Friction Folder Carbon / Aluminum - knife
Intended use: Tactical / EDC / Collection
Type of production: semi-handmade
Country of production: USA
Blade: CPM S35VN steel
Blade treatment: -
Handle: carbon fiber and aluminum
Blade length: 68mm.
Blade thickness: 4mm.
Length closed: 83mm.
Total length: 135mm.
Thick when closed: 12mm.
balancing:
Weight: 68 gr.
Opening: -
Washers: -
Closure: Friction Folder (without block)
Clip: titanium, removable
Packaging: nylon bag with EOS logos
Note: -EOS-P-CF-AL -
Kershaw - Emerson CQC-11K Wave Framelock - 6031 - knife
Intended use: Tactical / EDC
Type of production: industrial
Blade: 8Cr14MoV stainless steel
Blade Treatment: Stone Washed
Blade production: China
Handle: Stainless Steel and G10
Blade Length: 90mm.
Blade thickness: 3mm.
Closed length: 121mm.
Total length: 216mm.
Thickness of handle: 10mm.
Weight: 166g.
Closure: Frame Lock
Clip: removable and reversible, stainless steel
Sheath: -
Notes: Opening through a Wave system or with a spacer opening (removable) - Design by Ernest R. EmersonK6031 -
EOS Elite Outfitting Solutions - Orca S - Blue Titanium knife
Target: Tactical / EDC / Collection
Type of production: artisanal seed
Country of production: U.S.A.
Blade: Steel CPM S35VN
Blade treatment: -
Handle: Anodized titanium with thickness of mm per folder
Blade Length: 68mm.
Blade thickness: 4mm.
Closed length: 99mm.
Total Length: 175mm.
Closed thickness: 13mm.
balancing:
Weight:
Opening: Flipper
Washers: Steel ball bearings
Closure: Framelock
Clip: Titanium, Removable
Packing: nylon bag with EOS logos
Notes: -EOS-ORBG -
EOS Elite Outfitting Solutions - Orca S - Blue Titanium knife
Target: Tactical / EDC / Collection
Type of production: artisanal seed
Country of production: U.S.A.
Blade: Steel CPM S35VN
Blade treatment: -
Handle: Anodized titanium with thickness of mm per folder
Blade Length: 68mm.
Blade thickness: 4mm.
Closed length: 99mm.
Total Length: 175mm.
Closed thickness: 13mm.
balancing:
Weight:
Opening: Flipper
Washers: Steel ball bearings
Closure: Framelock
Clip: Titanium, Removable
Packing: nylon bag with EOS logos
Notes: -EOS-ORB -
EOS Elite Outfitting Solutions - Squid - Grey Titanium knife
Target: Tactical / EDC / Collection
Type of production: artisanal seed
Country of production: U.S.A.
Blade: Steel CPM S35VN
Blade treatment: -
Handle: Anodized titanium with a thickness of 4mm per folder
Blade Length: 86mm.
Blade thickness: 5mm.
Closed length: 122mm.
Overall length: 216mm.
Closed thickness: 14mm.
balancing:
Weight:
Opening:
Washers: Steel ball bearings
Closure: Framelock
Clip: Titanium, Removable
Packing: nylon bag with EOS logos
Notes: -EOS-SQGBB -
EOS Elite Outfitting Solutions - Squid - Grey Titanium knife
Uso: Táctico / EDC / Colección
Tipo de producción: semillas Mano
País de producción: U.S.A.
Hoja: Acero CPM S35VN
El tratamiento de la hoja: -
Mango: titanio anodizado de 4 mm por carpeta
Longitud de la hoja: 86 mm.
Grosor de la hoja: 5 mm.
Longitud cerrada: 122 mm.
Longitud total: 216 mm.
Grosor cuando está cerrada: 14 mm.
equilibrio:
peso:
apertura:
Lavadoras: Rodamientos de bolas de acero
Cierre: Framelock
Clip: titanio, extraíble
Embalaje: bolsa de nylon con logotipos EOS
Notas: -...EOS-SQG -
EOS Elite Outfitting Solutions - Squid - Blue Titanium knife
Uso: Táctico / EDC / Colección
Tipo de producción: semillas Mano
País de producción: U.S.A.
Hoja: Acero CPM S35VN
El tratamiento de la hoja: -
Mango: titanio anodizado de 4 mm por carpeta
Longitud de la hoja: 86 mm.
Grosor de la hoja: 5 mm.
Longitud cerrada: 122 mm.
Longitud total: 216 mm.
Grosor cuando está cerrada: 14 mm.
equilibrio:
peso:
apertura:
Lavadoras: Rodamientos de bolas de acero
Cierre: Framelock
Clip: titanio, extraíble
Embalaje: bolsa de nylon con logotipos EOS
Notas: -...EOS-SQB -
Kershaw - Junkyard Dog II Composite - 1752CB - knife
Intended use: Sport / EDC
Type of production: industry
Blade: stainless steel with sharp 14C28N in CPM-D2
Blade treatment: -
Production Lama USA
Handle: G10
Blade length: 92mm.
Blade Thickness: 3mm.
Length closed: 125mm.
Overall length: 216mm.
Balancing: -
Weight: 165g.
Lock: Liner Lock
Clip: Removable stainless steel Teflon
Sheath: -
Notes: opening by flipper12454 -
Kershaw - Boa Speed Safe - 1580 - coltello
Destinazione d'uso: Tattico/Militare
Tipo di produzione: industriale
Lama: in acciaio inox CPM440V
Trattamento Lama: nitruro di titanio
Produzione Lama: USA
Manicatura: Alluminio
Lunghezza lama: 90mm.
Spessore della lama: 3mm.
Lunghezza chiuso: 118mm.
Lunghezza totale: 200mm.
Bilanciatura: -
Peso: 142g.
Chiusura: Liner Lock
Clip: amovibile in acciaio inox
Fodero: -
Note: Design by Ken Onion - Apertura Servoassistita - Fermo di sicurezza a coltello chiuso4234