Spyderco C10TR Endura 4 Spyderco Endura 4, Trainer These Endura's have three-dimensional FRN handles with Volcano grip, nested steel liners and four-way pocket clips. Flat saber-ground blade, David Boye dent on the lockback round out this knife. Blade Steel SS Blade Thickness 1/8" 3mm Clip Reversible ambidextrous Diam. Blade Hole 15/32" 12mm Edge Type Plain Edge Handle Material Stainless Steel Hardness 59-60 Length Blade 3 15/16" 100mm Length Cutting Edge 3 7/16" 87mm Length Overall 8 13/16" 223mm