A: The internal torsion spring is activated when you push the "flipper" tab on the spine of the knife

Type: Z-Hunter Throwing Knives Zombie Set - 3 Piece Throwers Set

Blade Edge Type: Single-edged

5" Tac Force titanium coated spring assisted EDC pocket knife is a great tactical knife to have

Made with a stainless steel blade and double injection molded handle

7" Rite Edge Premium Wood Boss Lockback Hunting Pocket Knife ABS A: The internal torsion spring7" Rite Edge Premium Wood Boss Lockback Hunting Pocket Knife This Rite Edge premium wood boss lockback hunting pocket knife is a great manual folding knife to have. This Rite Edge lockback hunting pocket knife features a sharp stainless steel clip point blade and brown wooden handle with 3CR13 steel bolsters. Type: Rite Edge Premium Wood Boss Lockback Hunting Pocket Knife Overall Length: 7" Blade: 3" Stainless Steel Blade Clip Point Handle: 4" Brown