Maxline M3800 Master Kit, 1/2-Inch x 100-Feet Kit includes: 100 ft; of 1/2-inch tubing, (3) air outlet kits, compressor manifold kit, (5) elbow fittings, deburr and cutter tool 175 psi maximum working pressure, 1/2-Inch inside diameter x 5/8-Inch outside diameter Compression style nickel plated brass fittings Recommended usage 75 ft.; maximum from the air compressor, up to 2000 sq.; ft.; buildings, up to 5-HP air compressor Use only with Maxline 1/2-Inch system