CYCLUS TOOLS chain wear indicator gauge with scale.

Chain wear indicator which measures the degree of chain wear to determine the appropriate time to replace a bicycle’s chain.

The degree of wear (stretch) is indicated on the scale.

The measurement is taken between the inner link rollers to ensure an accurate measurement.

Worn out chains need to be promptly replaced, otherwise the life of the drive train components (cassettes, chain rings) can also be decreased as well.