Shimano FC-R7100 105 double 12-speed chainset, HollowTech II 165 mm 50 / 34T, bl
Shimano 105 C/SET 105 R7100 12spd 50/34 165mm. Lightweight HollowTech II 105 12-speed chainset. Can be used with Shimano external or press-fit bottom brackets. Lightweight anodised aluminium chainrings for smooth and precise shifting.