Shimano GRX ST-RX600 Shifter/Brake Set The Shimano GRX ST-RX600 delivers light and responsive shifting for mixed-terrain riding. The ergonomic shifter design improves comfort and the textured, anti-slip brake lever increases control on bumpy terrain. The GRX shifters features Shimano's Dual Lever Control, the Shimano Index System, and lever reach adjustment. Features Gravel inspired lever and bracket ergonomics Hydraulic System2x11-speed shifting Anti-slip brake lever Dual Control Lever Tooled reach adjust Greater mixed-terrain control Same light shifting operation as top tier systems Recommended brake caliper:BR-RX810Weight: 307 grams Sold individually, Left or Right side | Shimano | Grx St-Rx600 Shifter/brake Set Front, Resin Pads W/fin | Aluminum