Shimano Deore 610 Shift Lever SL-M610 Precise and consistent shifting performance Vivid index feeling with light and smooth operation Easy operation Ergonomic lever shape, orbit and easy access to levers with new brake lever 2x/3x mode converter, I-spec available (SL-M610-I) Minimum design optical gear display Weight: 265g (SL-M610, Pair) 237g (SL-M610-I, Pair)