The ABKT Catalyst Ball Bearing Opener - is made rough and rugged for everyday use. With a flip of the back tab, the blade will flow all the way open until the liner lock engages. Made with quick reliable ball bearings, this knife is an easy one-handed opener. It is ideal for everyday carry when you only have one free hand. It can be easily pulled from the pocket and deployed by a tug of the tap with one finger. The black stone washed blade is made from D2 (High Carbon Steel) hardened to a 58 HRC, and it's a healthy 3.5-inch blade for all your cutting needs. The D2 serrated blade will keep cutting while maintaining its sharp edge. The G10 handles are textured with our Carbon fiber texture for extra gripping. The liners have been hollowed out to make it as light as possible while maintaining durability. With the ball bearing pivot, it is reliable, and not cocked while it is in your pocket, so no safety lock is needed. The black oxide coated pocket clip is a reversible tip up design. 4.5in Closed length 3.5in Blade length D2 black stone washed blade tan textured G10 handle Ball bearing pivot system with liner lock Black oxide pocket clip