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Ships within 48 hours · Estimated delivery Sep 2 - Sep 7
Size:  27
14 g Black
Color: Blue
Gear ratios:
Birzman Chain Wear Indicator - 1-12 Speed Red Size:  27The Birzman chain wear indicator tool measures wear and stretching on single to 12 speed chains, so that you know when its time to replace it. A worn chain causes poor shifting performance and reduces the service life of sprockets and chainrings by wearing down the teeth. Regular checking for chain wear and a timely chain replacement prevent costly premature replacement. 11 and 12 speed chains should not be stretched more than 0. 5%. When using
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