ABSOLUTEBLACK OVAL 110mm 32T 5B 2X SUBCOMPACT BLACKSubcompact chainrings designed to reach comparable flatland speeds as standard sized while increasing ease of climbing and improving cadence These special super compact chainrings are compatible with the majority of 110 5bcd cranks making AbsoluteBlack the only company on the market offering such sizes AB oval reduces stress on knees and helps your legs remain fresh for longer Compatibility: Shimano Dura Ace 7950, Ultegra 6750, Shimano 105 5750,