Check valve works, holds air. Gage has a soft rubber/plastic cover for protection, braided metal air hose. Very good quality.
Really pleased with the quality of materials and build. However, I knew when I ordered it that I really didn't need a tread depth gauge. Unfortunatly that limits the space available for the pressure display. Too scrunched up. And it bleeds off air soooooo slowly. Overall though, good value and seems durable.
Accurate with large units every 5 (from 10-60) and small units every 2. If you want something that is very accurate between 10 and 15psi (w/ .5 psi units), this isn't the gauge for you. However, this version is great b/c you don't risk blowing it up if your tube is over 35psi like after a tire install. The relief valve works great, and makes settings easy to achieve.
The depth gauge is rather useless for a dirt bike, but this whole product is great for double use with a car. One negative is if you have a deep well rim, since the air-tip is bulky and fixed; doesn't allow for manipulation.