Hex Wrench for Tire Valve Caps

Here are two wrenches for Tire Valve Caps. One is sized to fit a hex cap that is 9.5 mm across the flats. The other is for a cap that is 12 mm across the flats.

Chances are good you will need a size that isn't here, but you can scale one of them to meet your needs. If you adjust the size, start with the one that is closest to your cap dimensions. Scaling it down will also reduce the wall thickness and weaken the wrench.

Update 3/12/18 I added a version of the larger wrench that ha