This is the XS Scuba SS Stainless Steel StarTool Multi-tool Features: Remove and replace the most common scuba hoses 1/2, 9/16", 5/8" & 11/16" wrenches Most common hex wrenches 5/32", 3/16" & 1/4" Valve handwheel driver All imperial sizes for US products Compact size - 3.85" x 0.5" thick (approximately) Stainless steel construction with silicone over mold The Star Tool is a must for a safe-a-dive-kit and makes a great gift for that diving significant other or friend. "