The GRX ST-RX400 10-speed hydraulic disc/brake lever provides greater control on mixed terrain. Gravel inspired Dual Control shift/brake lever and bracket ergonomics. Anti-slip brake lever. Same light shifting operation as top tier systems. Tooled reach adjust allows for lever to be adjusted to fit multiple hand sizes and riding preferences. BR-RX400 disc caliper features ICE Technology for excellent heat dissipation. Convenient tool access and One Way Bleed system mean set up and maintenance are simple. Item Specifications: Brake Lever Use: Right, Brake Caliper Mount: Flat Mount, Color: Black, Defined Color: Black, Drivetrain Speeds: 10, Rear Der/Shifter Compatibility: Road, Adjustable Reach: Yes, Adjustable Contact Point: No, Hydraulic Fluid Type: Mineral Oil, Rotor Included: No, Hydraulic Hose Length: 1700mm,