Description BUILT IN SHUT-OFF VALVE - The AL3010 utilizes a built in shut off valve and therefore cannot be used on inflator gauges. Use when air supply lines come directly from the compressor with no valve in the line. The ball chuck comes with a clip BRASS/ ZINC CONSTRUCTION - Durable, and ready to last. Capable of sustaining long term, heavy-duty use FOR THE PROFESSIONAL - Use on commercial jobsites, in automotive shops or at home in the garage 150 POUNDS PER SQAURE INCH - Maximum air line pressure THREAD SIZE - 1/4 inch FNPT