Park Tool CDG-2 Chainring Diameter Gauge



Show Description

Measure bolt circle diameters (BCD) fast and accurately. Use this tool for a wide variety of 4- and 5-bolt chain ring patterns – the tool heads centre in the chain ring holes, chain ring bolts, or crank arm holes.

  • Made of laser engraved anodized aluminum.
  • Measures both 4 and 5 BCD chain rings.
  • Includes a centre-to-centre distance scale and a handy reference chart that lists additional mounting pattern measurements.

Tech specs

Show Tech specs
Ideal for Bike maintenance
Made in USA