Interstate Pneumatics TW137 Dual Foot 6 Inch Ext Chuck for Truck (T37) with 12 Inch whip end 1/4 inch Red Rubber Hose | 12 inch Long Working Pressure: 300 PSI | Includes 6 inch long Dual foot chuck (T37) No internal shut off valve for use on inflator gauges only End 1: 3/8 inch - 24 UNF Brass fitting (FMS64T) for inflators End 2: 1/4 inch NPT male fitting