FITTING BULKHEAD 1/2"N-E by WATTS MfrPartNo CBTF12NEBG1 Application: For Used to Fill/Drain Water or Chemical Spray Tanks Fits For: For Use With Copper, PEX, CPVC and Polybutylene Tubing Compatible Pipe Material: Multipurpose End 1 Diameter: 1/2 in. Material: Nylon