Rapidair 90500 1/2" x 100' Air-Compressor Accessories Master Kit, 17.5" x 17.3" x 4.2" Kit includes: 100 ft. of 1/2 in.Tubing, (2) Air Outlet Kits and (1) Compressor Manifold Kit, Quick couplers pictured sold separately 150 psi maximum working pressure, 1/2 in. outside diameter x 3/8 in. inside diameter Push to Connect fittings Recommended usage 50 ft. maximum from the air compressor, up to 1200 sq. ft. buildings, up to 5 hp air compressor Use only with Rapidair 1/2 in. OD x 3/8 in. ID nylon tubing system