​OATEY 34474 Quiet Pipes O.D. Brass Compression Tee AA Hammer Arrestor SET OF 2
OATEY 34474 Quiet Pipes 3/8 in. Quiet pipes uses a piston design to help absorb the water shock in the system. Oatey products have earned the trust of plumbing professionals for over 100 years. AA size in a tee shape.