Tru-Flate Professional Pocket Gauge features a square nylon inflator bar calibrated in 1 lb. increments from 10 to 50 lb., making it easy to get precise pressure readings. This gauge is field adjustable for your convenience and comes complete with a handy pocket clip for easy carrying. It also includes a deflator pin on the chuck head, allowing for quick pressure release. The Professional Pocket Gauge is designed for durability with a nylon finish and is packaged individually on a card, ensuring you receive a quality product ready for use.Model Number: 17-509