Rapidair 90200 Compressor Manifold Kit for 1/2-Inch Nylon Tubing Kit includes: Aluminum block, (4) 50100 Rapidair adapter fittings, (2) 50300 elbow fittings and plug for unused port 150 psi maximum working pressure Block is ported 3/8 in. female NPT thread (4x) Anodized Aluminum with nylon push to connect fittings Use only with Rapidair 1/2 in. OD x 3/8 in. ID nylon tubing system