The Valve Repair Multi-Tool includes three tools needed to work on most scuba cylinder valves, including those from Thermo and Dive Rite (but not the Sherwood brand). The tools include: 11/16" Bonnet Nut Wrench, 3/8" Safety Assembly Wrench, and Seat Plug Driver. Made from chrome plated steel, the tool handle is vinyl dipped for improved grip. A limited lifetime warranty from Innovative Scuba Concepts backs this quality-engineered tool.