The Ralston XTHA-2MS0-XH 1/4" Male High Pressure x Male Quick-test XT Adapter connects a female 60° coned and threaded pressure fitting to a Quick-test XT 10,000 psi hose. It is excellent for connecting to Autoclave Engineers, Butech, HIP (High Pressure Equipment), Parker or equivalent High Pressure coned and threaded connections, valves, tees and unions. The metal to metal seal provides for 10,000 psi service. Please note that the adapter is not compatible with QT or QS hoses; please use Quick-test XT hoses.