High Pressure Gas Bottle Valve Adapter for M18*1.5 Threaded Gas Tank Oxygen Cylinder Filling Working Pressure 300Bar / 4500psi

High Pressure Cylinder Adapter Pressure tester with 40Mpa gauge Working Pressure 0-310bar/4500psi Thread M18*1.5 Male Female High Grade Aluminum Alloy A good spare for small brass valves, like small on/off valve and pin valve