[What in the box?]. This quality air chuck set, including 1 pcs gold 1/4" FNPT Extended Reach Straight Foot Dual Head Tire chuck, 1 pcs standard brass male quick plug fitting and a teflon tape. [Extended Reach & Dual Head Inner Thread Design] 12" lengthened air rod along with quality Inner Thread lock design dual head, especially designed for truck or RV's dual wheel and hard-to-reach tire valves, straight head chuck for inner tires and 30¡ã reverse chuck better for outer wheel, put it on tire valve stem then push and lean it to ensure no air leakage and easy one-hand operation.