Spyderco Stretch ZDP-189 Carbon Fiber Plain Edge Knife, Black Features a blade ground from ZDP-189 steel with an ultra-high 3% carbon content for superior edge retention and wear resistance Full-flat-ground blade with a plain (PlainEdge) cutting edge High-strength back lock mechanism with David Boye Dent ensures safe, secure blade lock-up Peel-ply carbon-fiber handle scales provide an attractive, secure grip Four-position pocket clip supports tip-up/tip-down, left or right-side carry