End 1 Diameter: 3/8 in. End 1 Type: Barb. End 2 Diameter: 3/8 in. End 2 Type: Barb. End 3 Diameter: 3/8 in. End 3 Type: Barb. Material: Nylon. Color: White. Compatible Pipe Material: PVC, CPVC, Copper and PEX. Fits For: For Use With Copper, PEX, CPVC and Polybutylene Tubing. Application: Vinyl and Polyethylene Tubing. Maximum Pressure: 220 psi.