Spyderco Endura 4 with Emerson Wave Partially Serrated. These newly re-designed for 2006 Endura's have three-dimensional FRN handles with Volcano grip, nested steel liners and four-way pocket clips. David Boye dent on the lockback round out this knife. Blade Steel SS Blade Thickness 1/8" 3mm Clip Reversible ambidextrous, Edge Type Partially Serrated. Handle Material Black FRN. Hardness 59-60 Length Blade 3 15/16" 100mm Length Cutting Edge 3 7/16" 87mm Length Overall 8 13/16" 223mm .