absoluteBLACK introduces premium Gravel - Road 110/4 oval chainrings in Sub-compact (super compact) sizes to improve your climbing and cadence. Increased Cadence is key to reducing perceived effort. With 46/30T and 48/32T chainrings you can ride anywhere and climb anything. Alpine climbs will never be that difficult anymore. These special super compact chainrings are compatible with all Shimano 110/4bcd cranks making absoluteBLACK the only company on the market offering such sizes. 30 and 32T chainrings allow you to climb on your own terms with improved cadence and efficiency. 10/11/12spd compatible. Ready to try?Size (Weight):30T - 27g32T - 30g46T - 99g48T - 110gCompatibility:ÊDura-Ace 9100, R9150 Di2, Ultegra 8000, R8050 Di2, Dura-Ace 9000, Ultegra 6800, Shimano 105 - 5800, 10 / 11 / 12spd compatible.Material: CNCÊmachined 7075 Txxx Aluminum. Long-lasting construction. Type II anodizingMounting: 110 BCD x 4Ovality:ÊOptimized to each size separately. 30T- 9% ; 32T - 8% ; 46/48T - 10-11.2% ; Timing of 108 -110.5¡ after TDC (top dead center) - Ideal for climbing. Patent PendingBolts:ÊSpecial bolts are included with 30T (2xM5 TI / 2xM7 AL) andÊ32T (4xM7 AL)Advantages of Absolute Black sub-compact Oval chainrings:30 and 32T chainrings allow you to climb on your own terms with improved cadence and efficiencyOne of a kind special oval shape that helps you climb easier and faster (Patent Pending)No more mashing on long climbs and wishing for bigger cassette.Have you ever had to walk the climb on sportive race? These rings will save you from it.46/11 or 48/11 is still a big gear to push on the flat. For your daily ride you most likely don't need moreYour pedaling will feel smootherAB oval reduces stress on knees and helps your legs remain fresher for longerYou will be able to maintain better cadence while climbingReduces possibility of leg crampsÊIMPORTANTDue to very special offset construction and custom bolts:30T can only work with 46T and special bolt set 46/30. (bolts included with small ring)32T can only work with 48T and special bolt set 48/32. (bolts included with small ring)No other combination or mix of rings will work. Due to special mounting construction, aesthetic bolt covers are not offered for this designWe Only recommend Dura-ace 11spd chain or Sram Eagle 12spd chain for proper clearance of mounting tabs