ITEM NAME:2X Shut Off Valve Gas Fuel Tank Pump Petcock Switch Gasoline GeneratorOZ FT Feature: 100% Brand new and high quality ON/OFF fuel shut off valve /strainer for generator and gas engine fuel tanks M10 X 1.25 tank port threds, Fuel line 1/4, hose barb dimensions 1-1/2 X 1-3/16 X 2-7/8 On / Off 90 degree rotation Specifications:.Loosen petcock mounting nut. Turn petcock to drain fuel. Remove petcock and filter. Insert filter and position petcock, take care to avoid crossing threads. ON/OFF fuel shut off valve /strainer for generator and gas engine fuel tanks.