This is a great value for what I wanted - an easy to use gauge/inflator with large analogue readings that seems very accurate (so far). . It has a great trigger, air liner already installed, and a very smooth 'clear' button if you add too much air. BUT as other reviews have reported, you have to manually push the tube against the tire valve - the included quick clamp DOES NOT WORK on any of my vehicle tires. Regardless, I'm very happy with the cost, but be aware that you have to hold the air tube on the stem with your hand again or you won't inflate the tire.