Love this thing. You build up the required pressure and it automatically stops when it reaches it. I checked the calibration with my sensors and it was consistent and accurate. Ideal for motorcycle tires on the race track. Lightweight, small and easy to carry. Works for a long time on a single charge if you only make bike tires. The cartridge is a high quality screw-on brass assembly. It fits fairly tricky access to standard straight valve Yamaha MT 10 or R1 front valve stems (rear is no problem either). It is also good for adjusting car tires. I don't know how long it would have lasted if it was widely used to inflate truck tires after off-roading or whatever (too long I doubt) but for inflating a few psi of the tires daily driver it worked fine.