Shimano Tiagra ST-4720/BR-4770 Mechanical Shift/Hydraulic Brake Lever Caliper - Rear Flat Mount Finned Resin Pads BLK Weight-327g Summary in plot form -

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

Pins are secured with captive locknuts for ultimate durability

28H front / 28H rear

you can adjust all pivot hardware and nearly everything else there is to adjust on the bicycle

5" Tire Bead Folding Labeled Size 650c x 28 Tire Type Clincher PSI 105 Size 650C X 28 Construction Aramid Bead

Shimano Tiagra ST-4720/BR-4770 Mechanical Shift/Hydraulic Brake Lever Caliper - Rear Flat Mount Finned Resin Pads BLK Weight-327g Summary in plot form -The 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