Shimano Dura-Ace FC-R9200 12-Speed Chainring - 36t Asymmetric 110 BCD BLK NH CheckoutSpec= Super Deluxe Thru-Shaft Synthesis hub has 17 degree

Synthesis hub has 17 degree engagement and standard flanges to accommodate j-bend spokes

and Boost rear spacing

Air Bump Stop cartridge technology to control the bigger hits towards the end of the travel

}Park Tool SK-4 Home Mechanic Starter Kit

Shimano Dura-Ace FC-R9200 12-Speed Chainring - 36t Asymmetric 110 BCD BLK NH CheckoutSpec= Super Deluxe Thru-Shaft Synthesis hub has 17 degreeShimano Dura Ace FC R9200 12 Speed Chainring 36t Asymmetric 110 BCD Black NH. Shimano Dura Ace FC R9200 chainrings are constructed with high quality aluminum and are compatible with FC R9200 and FC 9200 P 2x 12 speed cranksets. Asymmetric 110 BCD Compatible with HG 12 speed chains TECH SPECS Color BlackRing Position Type InnerTooth Count 36Round or Oval RoundDrivetrain Speeds 12Chainring BCD 110 Shimano AsymmetricMaterial AluminumDefined Color Black