The Tiagra ST-4720 hydraulic shift/brake lever brings the all condition confidence and refined ergonomics of hydraulic disc brakes to the quick and intuitive shifting cyclists expect from Tiagra.Features-2x10-speed-ST-4725 offers greater confidence and control for riders with smaller hands in all conditions-Dual control lever includes reach adjust mechanism-BR-4770 hydraulic disc brake caliper offers greater rider control in all conditions-2 piston caliper features 's One Way Bleeding technology for simple maintenanceItem Specifications-Brake Lever Use:Left-Adjustable Contact Point:No-Hydraulic Hose Length:1000 mm-Defined Color:Black-Rotor Included:No-Pad Compound:Resin-Brake Caliper Mount:Flat Mount-Front Der/Shifter Compatibility: Road-Color:Black-Adjustable Reach:Yes-Hydraulic Fluid Type:Mineral Oil