WYNNsky air line kit is designed for high-demand air tool users, different type connections allow customer to design and install your own personalized air system any way you want, which included 3/8 Inch ×60 Feet nylon tubing, 3pcs T-connectors, 4pcs unions, 6pcs 90° L-type Elbow, 1pc shut-off valve, 3pcs wall outlets, 1pc check valve, 3pcs 1/4 Inch NPT male connectors, 3pcs 1/4 Inch NPT female connectors,3pcs 1/4 Inch NPT female coupler, 1/4 Inch NPT female plug, 2pcs 3/8 Inch MNPT × 1/4 Inch FNPT Reducers, 17pcs Clamps, 1ps tubing cutter