I wanted a gauge for tires needing 10-25 psi. I'm running 2.8" tires which manufacturer said I should run 12 front, 14 rear. This was in a range my floor pump could not be precise (gauge was 0-160). In the future I plan to run 2.4" tires which will need a little more air, so I chose 0-30 gauge rather than 0-15psi. Easy to use, small, keep it handy in car to check at trailhead. Feels tough (metal not plastic) like it will last.