The Park Tool SBC-1 Spoke, Bearing and Cotter Gauge is a compact precision measuring tool designed to help mechanics quickly identify critical bicycle component dimensions. Whether you’re servicing wheels, overhauling hubs, or working on vintage and modern drivetrains, the SBC-1 provides accurate reference measurements that simplify part selection and compatibility checks.

This gauge is engineered to measure spoke diameter, bearing ball size, and cotter pin dimensions, making it especially valuable in workshops that handle a wide range of bicycles and components. Clear, easy-to-read markings allow mechanics to identify sizes at a glance, reducing guesswork and saving time during repairs or rebuilds. It’s particularly useful when original specifications are unknown or when replacing worn parts that need exact matches.

Constructed from durable metal, the SBC-1 is built to withstand repeated shop use while maintaining precise measurement accuracy. Its flat, pocket-sized design makes it easy to store in a toolbox or hang on a pegboard, ensuring it’s always within reach when needed. The straightforward layout allows both experienced mechanics and home builders to work efficiently without unnecessary complexity.... Read More