5 PCS Heavy Duty Air Chucks Set, 2-Way Air Chuck Closed Ball Tire Chuck w/ 1/4" NPT Male Quick Plug, Leakproof Tire Fill Kit for Inflator Gauges & Compressors, Car Accessories. The basic kit includes 1 dual-head tire chuck, 1 ball-head air chuck, 2 1/4" NPT male quick-connect plugs, and 1 roll of tape.