Gauge is very well built and lightweight for what it is and does. That's a solid weight. It was purchased for the rear wheels of my Dodge Cummings Dually 05 but has other uses as well. The sensor works very well on both the inner tire, which uses a straight chuck, which requires the chuck to be pushed, and the outer tire, which uses an angled chuck, which requires the chuck to be pulled. Front wheels no problem. Both cartridges seal very well. The long metal rod rotates 360 degrees, which is very convenient. The LED doesn't stay on for very long (as other reviews have mentioned) but your task is to do it, you push/pull, wait a few seconds for the cartridge to be on the valve, then take the pressure off the gauge Valve. Stock, then look at the screen, it's okay. The screen is well bright and the numbers are very clear no matter what unit of measurement is used. It is measured in tenths of PSI. I should have bought this many years ago. I have sneakers on rims (front and back) and I cut out one of the five ovals for you to put your hand in. You really don't see that one of the ovals is cut off. I stock TR600 valve stems that are 1-1/4" long, fairly short but stock. The rake angle and shear simulator works great on the outer tire and reaches the inner tire. I trimmed the simulator's hand hole. The simulator adds 3/8" to 1/2" thickness and affects the angle of the gauge to the valve stem, but there is no problem with the hole being cut. lots of reviews on the product so I thought I'd return the same. Lots is only written for a $15-20 purchase but wanted to share my thoughts on the gauge again the cartridges seal really well just buy and put it in.