TheShimano BB-MT800 HollowTech IIFC-MX70/71 Bottom Bracket Set?includes left and right hand cups, spacers, inner cover, and inner O-rings. Light weight seal structure helps to remove vital grams. Shimano BB-MT800 HollowTech IIFC-MX70/71 Bottom Bracket Set? Features Sealed cups keep out dirt and water Maintenance free For use with FC-MX70 / MX71 chainsets, 68 mm shell with short sleeve Durable anodised finish Easy installation
