Amazon.com : Shimano GRX ST-RX810 2 x 11-Speed Left Drop-Bar Shifter/Hydraulic Brake Lever with BR-RX810 Flat Mount Caliper, 1000mm Hose : Sports & Outdoors
Shimano GRX BL-RX812 Hydraulic in-Line Bartop Brake Lever at BikeTiresDirect
Shimano GRX component series is the first dedicated gravel group w/ 10 & 11 speed options - Bikerumor
The Best Brakes for Bikepacking? Mechanical vs Hydraulic - BIKEPACKING.com
Amazon.com : Shimano GRX ST-RX400 GRX Mechanical Shift Hydraulic STI Lever, 10-Speed, Right Hand : Sports & Outdoors
Best disc brakes for gravel bikes: stoppers for gravel grinding | Cyclingnews