Shimano Saint SL-M810 Shifters, Flat Bar-Right offers proven RapidFire Plus shifting technology combined with compact, adjustable ergonomics. Ergonomic main lever shape allows an easy reach with the thumb regardless of the position of the shift unit Short Stroke and Instant Release make quick work of accelerating out of corners 2-Way Release shifts in both directions for rider preference Variable Positioning: Shift unit can be mounted inboard or outboard of the brake lever with multi-position mount Cassette Spacing: DynaSys 10 Shifter/Derailleur Compatibility: DynaSys 10 End Type: Shimano/Sram.