Birzman chain wear guage 1-12 speed

The Birzman chain wear guage is an essential tool for cycling enthusiasts who want to keep their bikes in top condition. This wear guage can be used for all types of chains and features an individual wear indicator for each type.

• Accurate Measurement: Change 11-12 speed chains at 0.5% wear for optimal performance.
• Single Speed Maintenance: Change at 1% wear to ensure longevity.
• Versatile Use: Change other chains at 0.75% wear.