Imagination is the only limitation to how much the microSHIFT thumbies can do. Their small minimalistic designs are packed with precision machined mechanism that allows you to shift accurately with either index or friction mode. Go on any adventure without worries for mechanical issues. Features: Include shift cables Indexed or friction mode convertible rear shifter Indexed mode is compatible with Shimano 10-speed road systems Specifications: Shifter Style: Thumb Speed: 2/3 x 10 Speed Derailleur Compatibility: Shimano Road (10 Speed) (Not Compatible w/ GRX, Tiagra 4700) Shift Mechanism: Cable Actuated Color: Silver Weight: -