TireTek Truck-Pro Dual Head Heavy Duty Gauge Review - 160 PSI This gauge has a straight tip for the inner rim and a beveled tip for the outer rim. This is the first sensor that has worked on my high performance dual rims. Most of the gauges I saw in stores were elbows or flexible hose that didn't reach the inner and outer rim valves anyway. I always lost a lot of air when checking the pressure. I ended up at a gas station (on a large oil rig) with a straight air chuck similar to the tips on this gauge. It was perfect! I found this on the internet and it is not only the right shape, but also a sign of quality. The analog manometer is easy to read and keeps the pressure values. The reset button resets the sensor or deflates the tire to the desired pressure. The black cover is made of rubber and provides a nice bumper for the pressure gauge. This is the size of a truck, and the size is not easy to adjust; I have locks in the cockpit, not in the glove box. One reviewer mentioned that it just wouldn't work on their drives. It may be best to find a straight cartridge at a service station and check that the design will match your particular discs before ordering.