Poly alloy fittings. End style: PEX. Size A Temperature rating : 200 Deg FUsage, Water supply. Connection type : Barb X Barb. Meets UPC, IPC And CUPC, NSF Listed Suitable for use with Apollopex crimp rings, stainless steel pinch clamps, and stainless steel sleeves, Corrosion resistant, lead free, removable. Size 1” x 3/4” x 3/4”. 5 fittings.