H556 Schrader Valve (MAX 3000 psi) High quality, high pressure inflating connector attaches securely by hand or wrench (11/16") to standard tyre valves and high pressure tank valves. The T-handle can then be used to safely depress the valve pin. Comes with 1/8" Male NPT inlet thread and 7.7 mm (.305"-32) valve thread. Has a core depression pin and copper sealing washer.The H-556 is typically used for pressurizing shock struts, accumulators, fire extinguishers and high pressure applications up to 3000psi.If you require a JIC male inlet thread see part# H556J