The Shimano GRX ST-RX600/BR-RX400 hydraulic brake/shift lever and disc caliper features gravel inspired lever and bracket ergonomics. Features: ST-RX600 Dual Control shift/brake levers provide the same light shifting operation as top tier systems Anti-slip lever design Reach adjust mechanism allows lever to be adjusted to suit any hand size, type of riding and individual rider preferences Specifications: Shifter Style: Lever (Road) Speed: 2 x 11 Speed Derailleur Compatibility: Shimano Road (11 Speed) Shift Mechanism: Cable Actuated Adjustable Reach: Yes Brake Type: Hydraulic Brake Fluid: Mineral Oil Brake Mount: Flat Mount Brake Pads: Organic/Resin Hose Length: 1000mm (Left), 1700mm (Right) Color: Black Weight: 307g (Per Side)