Strong and solid mechanism with it's double springs inside for a durable and faster opening. Blade play is almost zero minimum. Press the button forward and the blade rockets out. Pull the firing button back and the blade retracts safely. The action is fast and the knife is light and ergonomic. Satin razor sharp bayonet blade, black pocket clip. Overall Length: 20cm - 8" Blade Length: 8.5cm - 3.35" Blade thickness: 3mm - 0.12" Weight: 88 g - 3.10 oz. Blade Material: 440A Stainless steel Handle Material: Aluminium Inlay Material: Hand Grip Inserts