1. Loading...

Park Tool Chainring Diameter Gauge

$46.99 Model 22905
Quality chain tools for every drivetrain
Search store availability

Park Tool - A Lasting Legacy

Every repair and maintenance task is easier and more enjoyable with Park Tool.

Product details

  1. Measure bolt circle diameter for a wide variety of four and five bolt chainrings
  2. Made of anodized aluminum and permanently laser engraved
  3. The tool centers itself in chainring holes, chainring bolts, or crank arm holes
  4. Includes a center-to-center distance scale and a handy reference chart 

More options

Product Compare Rack

Start comparison
Canada / English
You’re looking at the Canada / English Trek Bicycle website. Don’t worry. We’ve all taken a wrong turn before. View your country’s Trek Bicycle website here.