SRAM Chain Wear Check Tool 39 Center bore for axle or

Center bore for axle or Q/R nut clearance is 20mm

Installation is simple and tool-free

The 4-bolt design utilizes a 110mm asymmetric BCD to ensure a perfect fit and seamless integration with the R9100 crank arms

This durable freewheel features an 18-tooth count

Replace your SIDI heel pads sooner than later to avoid damage to your carbon sole shoes

SRAM Chain Wear Check Tool 39 Center bore for axle orThe SRAM Chain Wear Check Tool is a Go NoGo style gauge designed for accurate chain wear measurement. It is compatible with all existing SRAM chain models, including HARD CHROME and non HARD CHROME technology, indicating a 0. 8% wear critical specification. Quick Facts Feature Specification Tool Type Go NoGo style gauge Wear Rating 0. 8% critical wear Compatibility All existing SRAM chain models (HARD CHROME and non HARD CHROME)