• Accurately and quickly measures chain slack
  • Two scales measure both chain slack and chain to swingarm clearance in millimeters
  • Light weight compact design fits easily in your tool box or road kit
  • Works on most street and dirt bike applications up to 75mm chain slack
  • Anodized laser etched precision measuring scale
  • Refer to your owner’s manual for proper chain slack and procedure
  • Patented Design