Shimano RD-4700 Tiagra 10-speed GS Rear Derailleur

Offering pro-level features, the 10-speed compatible Tiagra rear derailleur gives high performance at a low price.
Features:
Wide link design increases rigidity and service lifeAdvanced light action for low-friction shifting up or down the blockAlloy body's and outer link leads to lower weight without compromising strength and durability11-tooth pulleys for reduced pulley wear and chain noiseTwo fluorine-coated link pin bushings for low-friction performance32 tooth max with triple, 34 tooth max with double chainsetCompatible with 4700 10-speed road drive systems only