Review on DNM Bicycle Shock Portable 300PSI by Troy Gerhardt

Pressure readings appear to be very close to actual pressure when compared to other mechanical and digital pressure gauges. The valve end is easy to operate before opening the valve SO due to the larger size and tightness. It will drop about 5psi when hooked up to a small gas shock, but you can pump it up a bit to minimize that. I don't think it will be easy to inflate a tire over 200psi and if you have no other choice it will take a very long time to inflate a tire but it is possible. The vent button works great and only releases a very small amount of air when pressed, but when pressed lightly it releases all the air. The handle is a bit awkward to hold, but that's okay. Definitely something you need to set the air pressure in a gas shock should be sold as a kit with the shock. Very well finished and maintained.