This is the Tusa Imprex X-Pert II Scuba Diving Drop Point Knife with Sheath and Leg Straps Features: 420 Stainless Steel blade FK-910 features a drop point blade, FK-920 features a blunt tip blade Newly designed ergonomic grip with counterweight Includes a serrated edge plus a line cutter Single button sheath lock release Easy-to-adjust buckle and strap allow for a comfortable fit Disassembling capability for easy cleaning and maintenance Efficient 4 1/2 / 11cm length blade 10" / 25cm overall length The FK-910 X-Pert II knives are made from high quality, corrosion resistant 420 Stainless Steel and can be easily disassembled for cleaning and maintenance. "