Specifications: CM Total length: 21.5 Blade length: 9 Blade thickness: 0.3 Blade width: 4 Handle material: All steel Blade material: 440 Hardness: 55 Weight: 230g Locking: Mechanical lock Blade: Sharp Surface treatment: Tiger pattern titanium treatment Comes with back clip, nylon cover, original carton. Unique shape, innovative operation method, breaking the traditional concept, giving you a completely new look! Opening the knife: The triangular part at the end of the knife handle can be like a movable clip. Use your fingers to clamp it with a little force to open the knife blade. (See the attached picture) To close the knife: Press the triangular tail of the handle to fold the blade. (see attached picture)