SharkBite UC4016LFA Adapter, 3/4 x 3/4 in, Barb x Crimp, Brass, 160 psi Pressure

Transition from polybutylene to PEX pipe. Includes two color coordinated crimp rings the black crimp ring is for PEX pipe, while the copper colored crimp ring is for polybutylene pipe. Certified for use in potable water and hydronic heating systems.