Shimano GRX BL-RX600-L GRX hydraulic brake lever RX400-R Caliper Left Rear 2s

Shimano GRX BL-RX600 Left brake lever Hydraulic (not a shifter)

Shimano GRX ST-RX600-L with BR-RX400-R flat mount Hydraulic Disc Brake - BNIB CX

Shimano BL-RX600 GRX Hydraulic Disc Brake Lever - BR-RX400 Calliper - Left Rear

Shimano GRX BL-RX600-L CX/Gravel Bike Hydraulic Disc Brake LH Rear 1700 SH565-S6

NEW Takeoff Shimano GRX BR-RX400 Hydraulic Brake Gravel Calipers Pair

Shimano Hydraulic Brake Set BL-RX810 Left Hand Lever Rear Calliper 1700mm Hose

New Shimano GRX Gravel Shifter ST-RX600 + BR-RX400 Brake Front Left 1000mm