Shimano tiagra 4600 2x10 speed sti shifteroriginal shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity the lever is designed for easy operation with a compact lever bracket hood made from soft rubber and anatomically shaped to allow easy braking and shifting regardless of hand position features arced travel on the shift lever always keeps the lever in reach when sweeping shifts across the cassette 10 speed precision road shifting