Blade HQ Exclusive! This Endura 4 model boasts a CPM M4 steel blade with a black titanium carbonitride (TiCN) finish! It is paired with our popular mint green FRN handle as a limited edition Blade HQ exclusive that is both practical and collectible. Yes, you asked for it, and Spyderco listened! The blade on this Endura is premium CPM M4 steel with extreme abrasion resistance, just like you wanted. With that said, this pocket knife has all the high-quality we've come to expect. The spine jimping extends from the ramp to the top of the handle. The Spyderco original thumb hole on the blade allows ambidextrous one-hand opening for right or left handers and the phosphor bronze washers at the pivot make the blade action smooth. The Endura has a lightweight FRN (fiberglass reinforced nylon) handle with skeletonized stainless steel liners and a strong lockback mechanism. The handle features screw construction for quick, simple cleaning and adjustment. The FRN scales utilize Spyderco's patented Bi-Directional Texturing to keep your hand from slipping under pressure. The pocket clip is 4-way reversible for tip-up/down and left/right carry. The Endura is a larger version of the Spyderco Delica knife. Both knives have been extremely popular over the years thanks to their lightweight, high performance build and affordable price.