12" Extended Reach Dual Head Air Chuck, 2-Way Connection 1/4" FNPT Straight Foot Lock On Tire Inflate Chuck, Tire Chuck w/Quick Plug, Air Compressor Fill Kit for Truck RV Semi Dually Tires. [MULTIPLE WAYS EASY CONNECTION] This premium air chuck featured a 1/4" FNPT thread for easily connected to most air compressor's air lines or tire inflator gauge.