Ball Foot Air Chuck Product Type Heavy-Duty Tire Chucks Chuck Type Ball Foot Push-On Includes Built-In Shut-Off Valve Maximum Operating Air Pressure 150 psi Head Style Single Number of Tire Inflators 1 Pressure Increments Not Applicable Thread Size 1/4 in Hose Length Not Applicable Thread Standard FNPT Material Steel Minimum Operating Air Pressure 1 psi Features Built-in Shut-Off Valve Use when Air Supply Lines Come Directly from the Compressor with No Other Valve in the Line