100% U.S. designed, assembled and tested
Designed for use of servicing valves in R134a systems with standard valve cores
For high (16 mm) and low (13 mm) service port standard type valve
Access and change valve cores while the A/C system is still filled with refrigerant
Stainless steel ball valve design and patented thread remover lets the user block off the system while changing the valves cores, allowing for no refrigerant loss