SPECIFICALLY DESIGNED: This BCD Knife is specifically designed to install on Sherwood Scuba or Genesis Scuba BCDs 316 STAINLESS STEEL. AKONA uses 316 Stainless Steel. It is more expensive but it is also more rust resistant than the less expensive 304 stainless. If you are going into any salt water you want 316. It will last longer COMPACT: This knife and sheath is compact and maintains a low profile PRESSURE LOCK: Knife is secured into sheath with improved Pressure Locking Tabs The Edge Knife is made by AKONA, an American Sporting Goods Brand, specializing in Watersports since 1992