SC10PSBK Spyderco Endura 4 LockbackThe Endura 4 Lockback is a mid sized folding knife with a 3. 75" partially serrated VG 10 blade that handles slicing and cutting tasks with reliable edge retention and corrosion resistance. The black textured FRN handle provides solid grip in wet conditions, while the lockback mechanism and thumb pull ensure secure one handed deployment. At 5" closed, it fits most pocket clips and EDC setups across EU jurisdictions that permit folding knives. VG 10