Shimano 105 12 Speed Crankset Fc-R7100 Black, 170mm, 50-34T

Arm material: aluminum Arm length: 160mm, 165mm, 170mm, 172.5mm, 175mm Chainring size: 50/34t Ring:2 BB type: 68mm thread Built for Shimano 105 drivetrains, the Shimano 105 FC-R7100 12-speed crankset provides powerful, smooth shifting when you push the pedals to the max. The 50/34T chainring is made with a unique design that provides the perfect balance of stiffness, durability, and rolling performance while delivering minimal weight and maximum power. Looks are important, so Shimano gave this aluminum crankset a black gloss anodized finish.