Introducing the Axle Ruler Pro by Wheels Manufacturing: the precision tool for bike mechanics. Simplify axle measurements with its comprehensive male and female thread pitch options. Its self-centering axle measurement channel and dual inch/centimeter ruler cater to your preferences. Peg board compatible for easy storage. Accuracy without the fuss. Hard anodized 6061 aluminum Male and Female measurements: M9x1, M9x26, 3/8"x24, 3/8"x26, M10x1, M10x26, M12x1, M12x1.25, M12x1.5, M12x1.75, M14x1.5, M15x1.0, M15x1.5 Ruler: Imperial 0-11" - Metric 0-28cm Peg board compatible Use with Solid and Thru Axles Made in the USA