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 aluminumMale and Female measurements: M9x1 M9x26 3/8"x24 3/8"x26 M10x1 M10x26 M12x1 M12x1.25 M12x1.5 M12x1.75 M14x1.5 M15x1.0 M15x1.5Ruler: Imperial 0-11" - Metric 0-28cmPeg board compatibleUse with Solid and Thru AxlesMade in the USA