Shimano Deore Rear Derailleur Shadow 10sp M593 Wide link Shadow design Dyna-Sys 10-speed top normal Deore rear derailleur Shadow features a super low profile design that reduces the risk of damage from trail side hazards Single tension spring prevents contact with the chainstayresulting in a silent ride Direct cable routing prevents snagging from any trail side hazards Alloy & steel construction leads to lower weight without compromising strength & durability Wide link design increases rigidity & service life Top normal return spring lends to incredibly intuitive operation when combined with Rapidfire shifters Large 11 tooth pulleys are used for longer life Two fluorine-coated link bushings for low-friction operation Dyna-Sys 10-speed compatible only Compatible with 32-36T low sprocket Buy Shimano Deore Rear Derailleur Shadow 10sp M593 Chain Reaction Cycles, the worlds largest online bicycle store.