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CMH Designs Freehub Measuring Tool

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CMH Designs Thru Axle Hub Measuring Tool


This was inspired by a very similar tool (printed on heavy card stock) from DT Swiss which they gave out at a mechanics’ seminar several years ago.

It’s a simple stick that you can use to identify Boost hubs (110m front, 148mm rear) from non-Boost (100mm front, 142mm rear) quickly and easily. Put it through the hub and see what lines up. If it lines up on the side that says “Boost”, then you’ve got a Boost hub. If it doesn’t, then you’ve got an older non-Boost hub!

The steps on the other side allow you to identify 12, 15, and 20 mm axle diameters. Last but not least, the little hole allows you to store the tool on your tool board.

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