The quarter turn straight valve has an inlet for 1/2 in PEX connections and an outlet of 3/8 in O.D. Keeney's No Crimp™ PEX products allow for a quick and easy installation without any specialty tools. Tightening the nut onto the valve compresses the split ring sleeve around the pipe, internal barb and double O-ring for a seal the produces a leak free connection. It is polished chrome solid brass and meets all lead free requirements. This valve uses ball construction for long life.