This is the Akona Talon Dive Knife with Pressure Locking Sheath in Stainless Steel or Titanium Features: The Talon knife comes in either stainless steel or titanium The stainless steel blade is made of 316 stainless steel Medium point blade is 4.5 Sheath with pressure lock releasing mechanism Leg straps included Lifetime warranty against defects in material and workmanship This fantastic dive knife is an excellent tool to have on hand during dives.