I love this tool for checking and adjusting tire air. I love that this gauge has a clip that holds it to the valve stem, freeing up one hand that would normally hold the fitting on the valve stem. This is very handy for inflating bike tires where the valve stem tries to push into the inside of the wheel when you try to pump air. Even with car tires, it is better not to press them against the valve stem during use. . If you inflate and exceed the recommended tire pressure, you can simply pull the trigger a little harder and deflate without removing the tool. So comfortable.