The Shimano RD-M310 Altus 7/8-Speed Rear Derailleur has advanced light action with a wide link design offering more precision and rigidity when shifting. It is a typical high-quality Shimano part at a great price.
– It has a long cage length
– It is used for mountain bikes
– It can work with the largest cog of 34 Teeth
– It has a chain wrap capacity of 43 Teeth
– It weighs 326g