RapidAir 90100 Compressed Air Outlet Includes: Aluminum block, 50100 adapter fitting, 50300 elbow fitting, 45 deg npt, nipple, drain, plug, Quick coupler sold separately 150 psi maximum working pressure Block is ported 3/8 in. female NPT thread on 3 sides, 1/4 in. female NPT thread outlet port front side Anodized Aluminum with nylon push to connect fittings Use only with Rapidair 1/2 in. OD x 3/8 in. ID nylon tubing system