microSHIFT R10 R47 10 Speed Rear DerailleurFeaturing a forged aluminium outer link construction for excellent durability on every mile, this 10 speed rear developed is specifically developed for the demands of road cycling. microSHIFT has also put this model through its CNC-machining process, which shaves off any unnecessary material while still maintaining maximum strength. As a result, you'll benefit from its reliable shifting performance without adding any excess grams to your drivetrain. Another highlight is its cage is made from strong steel for extra resilience and longevity, wherever your next road journey takes you.Shimano Road Compatible 10 Speed Rear MechR10 rear derailleurs feature forged and CNC machined construction, pairing durability with finish quality. Compatibility with Shimano road products means you can mix and match to your heart's content.Features: Clamp Material: Outer Link Material: Forged and CNC-machined Aluminium; Cage: Steel Use: Road Speed: 10 speed Cage Length: Long Cage Max Cog: 25-28T Capacity: 39T Clutch: No Compatibility: Shimano RoadTechnologies: Lightweight aluminium construction.Manufacturer's Part Number: RD-R47-BK Black Long CageBuy microSHIFT Components from Chain Reaction Cycles, the World's Largest Online Bike Store.