SHIMANO GRX RX820 Groupset GRAVEL bike hydraulic brake, 1*12s

Shimano GRX RX820 1x12-Speed Groupset
Shimano GRX ST-RX820 Shifter lever
Shimano GRX BR-RX820 Brake
Shimano GRX FC-RX820 Crankset 170/172.5/175mm -40/42T
Shimano GRX RD-RX822 Rear Derailleur 
Shimano GRX CS-M8100 10-51T
Shimano GRX CN-M8100 chain