Roadlink Rear Derailleur Part

– The RoadLink is optimized for use with ten or eleven-speed 11-36t and 11-40t cassettes
– 11-42 or 10-42 setups are not supported
– Works with all 10-11 speed Shimano and SRAM Road Derailleurs
– Best used with Single or Double Setups – see manufacturer’s site for more details