GRX ST-RX400 Brake/Shift Lever & Disc BrakeBR-RX400 disc caliper features Shimano ICE Technology for excellent heat dissipationConvenient tool access and One Way Bleed system mean set up and maintenance are simpleBrakes are pre-bledGravel inspired Dual Control shift/brake lever and bracket ergonomicsAnti-slip brake leverSame light shifting operation as top tier systemsTooled reach adjust allows for lever to be adjusted to fit multiple hand sizes and riding preferencesCompatible only with FD-4700 and FD-RX400 front derailleurs, and RD-RX400 and RD-4700 rear derailleursItem SpecificationsAdjustable Contact PointNoAdjustable ReachYesBrake Caliper MountFlat MountBrake Lever UseLeftColorBlackDefined ColorBlackDrivetrain Speeds10Front Der/Shifter CompatibilityShimano RoadHydraulic Fluid TypeMineral OilHydraulic Hose Length1000Pad CompoundResinRear Der/Shifter CompatibilityShimano RoadRotor IncludedNo Shimano GRX ST-RX400 Hydraulic Brake/Shift Lever, Drop Bar UPC: 192790450179