Shimano GRX RD-RX822 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Long Cage - 1x12 - 51T Max NoAusPost The paddle itself is made

The paddle itself is made from 6061-T6 aluminium

and the single-layer palm is mapped with laser hole perforation for breathability

Compatible with the following Shimano crankset models: M782

7075 aluminium

How does it carry them: The Thule Double Track Pro XT is what's called a platform rack

Shimano GRX RD-RX822 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Long Cage - 1x12 - 51T Max NoAusPost The paddle itself is madeWith 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.