Summary Well made metal tool with knurled surface for easy use on tire valve stems. Used today on 4 tire valve stems. Loosen all 4 and check for leaks, then retighten. Easy to use and big enough to hold on to. Used on Yamaha Super Tenere, Honda CTX700 and Suzuki 2012 DL650a motorcycle tires. I have not tried it on bikes, car or truck tires. But it should be good