With a durable CNC machined aluminium construction to last long years in your toolbox and compatible with derailleur chains from single to 12 speed, the Birzman Chain Wear Indicator II is the perfect tool to quickly and accurately check the degree of chain wear.
. Material: CNC machined 6061 alumium
. Indications: 0.25/ 0.5/ 0.7/ 0.8/ 1.0%
. Compatiblilty: single - 12 speed chains