The tiagra 4700 double sti shifter set from shimano features two levers with an easy operation design built in made for 10 speed precision road shifting they have compact lever bracket hoods made from soft rubber and anatomically shaped to allow easy braking and shifting regardless of hand position the arced travel on the shift lever always keeps the lever in reach when sweeping shifts across the cassette to ensure easy gear shifting and braking the main lever has been fitted with adjustable