rd round 2x for al blk

Round chainrings for all Shimano 4x110BCD cranks.Features:Features (6) up-shifting ramps (outer ring) and (12) down-shifting points (outer ring)Compatibility: Shimano Dura-Ace 9000, Ultegra 6800, Shimano 105 5800, Tiagra 4700Designed in UK, manufactured in PolandSpecifications:Speed: 10/11/12spMount: 4x110mmTeeth: 34tOval/Round: Round