SHIMANO DURA ACE DI2 11速衝刺輔助波手-SW-R610 / SHIMANO DURA ACE DI2 SHIFT SWITCH-SW-R610

-Right shifter - shift down the cassette

-Left shifter - shift up the cassette

-Quick rear shifting while in the drops

-Locate anywhere on the handle bar

-Weight: 10g (Pair)