A classic Spyderco knife, the Endura 4 features a flat saber-ground VG-10 steel blade, a black FRN Bi-Directional Textured lightweight handle, four-way clip option, screw-together construction, skeletonized steel liners, phosphor bronze washers, sturdy back lock with David Boye Dent, spine jimping, and an enlarged thumb hole for easy one-handed opening. Blade length: 3.75". Open length: 8.5". Closed length: 4.75". Weight: 2.9 oz.