Features & Benefits
- Essential tool for measuring spokes, ball bearings, and crank cotters.
- Features 9 holes for sizing common ball bearings and cotter pins.
- Includes both metric and fractional length markings.
- Made from anodized aluminum with embossed markings for durability.
- Perfect for bike mechanics of all skill levels since 1963.
- Can also be used as a general-purpose ruler.


























