Shimano Deore M610 10 Speed Rear Derailleur / Mech - Long Cage / SGSShimano Deore M610 10 Speed Rear Derailleur Mech Long Cage SGS The Deore's Shadow design features a super low profile with direct cable routing which prevents snagging from any trail side hazards and reduces the risk of damage with the wide link design increases rigidity and service life. The derailleur is direct mount compatible which gives more space around the rear frame dropout resulting in easier rear wheel removal but also allows frame designers