Shimano Tiagra ST-4720/BR-4770 Mechanical Shift/Hydraulic Brake Lever Caliper - Rear Flat Mount Finned Resin Pads BLK Weight-327g Enables compatibility with K-EDGE Go

Enables compatibility with K-EDGE Go Big Mounts and Combo Mounts with GoPro style interface

or 49mm lower head tube inner diameter

Pins are secured with captive locknuts for ultimate durability

28H front / 28H rear

Summary in plot form - movement towards the red X is in the direction of goodness (more chain wrap and less free chain)

Shimano Tiagra ST-4720/BR-4770 Mechanical Shift/Hydraulic Brake Lever Caliper - Rear Flat Mount Finned Resin Pads BLK Weight-327g Enables compatibility with K-EDGE GoThe Shimano 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 Shimano Tiagra. 2x10 speed Brake Lever Actuation Hydraulic Rotor Included No Brake Caliper Mount Flat Mount Brake Lever Use Right Rear Der Shifter Compatibility Shimano Road Drivetrain Speeds 10 Color Black Hydraulic Fluid Type Mineral Oil Pad Compound Resin