Closed 4.25 inches
Open 6 inches
Blade (Lg) 1 7/8 inch
(Med) 1 1/2 inch
(Sm) 1 3/16 inch
Width 1/2 inch
Weight 6.1 oz
...
https://www.youtube.com/watch?v=N36bWBsZNJk
This is the Evolution S18 made by Victorinox. It is part of the Del'emont collection. It is an 85 MM model knife.
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https://www.youtube.com/watch?v=SiNTX9u_OpE
Case Copperhead 2021 vault knife;
Close 3 7/8 inch
Blade 3 inch
Open 6 7/8 inch
Weight 3 - 3.2 oz
Wood is Black Sycamore
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https://www.youtube.com/watch?v=XGF5ILB6TYY
Victorinox Hunter Pro Alox Red
Specs;
Close 135 MM 5.4 inches
Open 235 MM 9.25 inches
Blade 97 MM 3.8 inches
Thickness 4 MM 0.16 inch (Blade)
Weight 187.1 g 6.6 oz
Stainless Steel liners.
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https://www.youtube.com/watch?v=JUIjw_0PNQU
SOG Voodoo Hawk Mini
Blade 3 inch
Head 7 inch
Length 12 inch
Weight 23 OZ
Hardness RC 46 - 52
Steel 3CR13MOV
Handle Glass reinforced nylon
Finish Hard-case Black
Cold Steel Sure Strike Throwing Stars
Weight 6.4 OZ
Thickness 6 MM
Diameter 5.75 inch
...
https://www.youtube.com/watch?v=wzAH6Unr62k
Mr Willey's SAK
SPECS;
Close 91 MM 3.5 inch
Open 159 MM 6.25 inch
Blade 70 MM 2.75 inch
Weight 84 g 3 oz
...
https://www.youtube.com/watch?v=EVfpH3bfZZI