New Vindicator On-Off Safety Valve Handle for Scuba Diving Tank Valve Handle - Model #2 Fits Thermo, Sherwood 4000, Sherwood 5000, Dacor, Catalina, OMS & PST Valves This Vindicator Valve Handle #2 Fits the Following Valves.... ThermoSherwood 4000Sherwood 5000DacorCatalinaOMSPST Easy to install