Comes in a handy pocket bag that easily fits in a jersey pocket

366g (11-36)

Who's this item for: It's a useful tool for anyone that needs to check the condition of their chain and cassette

IS: 51mm International Standard

fast conditions or a front tyre for short-track events and less technical trails

Shimano GRX RD-RX822 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Mid Cage - 1x12 - 45T Max PLP|Model Year Comes in a handy pocketWith its integrated chain stabilizer and medium cage, the SHIMANO GRX rear derailleur delivers quieter shifting, better ground clearance and more secure chain management in rough terrain. The RD RX822 SGS is compatible with 10 51T, 12 speed SHIMANO MTB cassettes, and the chain tensioner has an ON OFF switch for easy wheel removal.