Black Pocket Samurai - Titanium Keychain Folding Knife - EDC, Tanto Blade, Razor Sharp. Keep the strength of the Samurai in your pocket with this unbelievably strong knife. Made from titanium with a 440C stainless steel razor sharp Tanto blade. Includes a keyring loop and stainless steel pocket clip so you can carry it the way you like! Weight - Less than a single ounce! Blade - 50mm x 9.5mm x 2.84mm Closed Knife - 67.5mm x 11.7mm x 7.6mm (depth) Open Knife - 120.11mm.