Features: Wide link top normal Deore rear derailleur Wide link design increases rigidity & service life Top normal return spring lends to incredibly intuitive operation when combined with Rapidfire shifters Alloy & steel construction leads to lower weight without compromising strength & durability Large 11 tooth pulleys are used for longer life Two fluorine-coated link bushings for low-friction operation 8- & 9-speed compatible Compatiblewith 28-34T low sprocket Average weight 299 grams