Shimano Dura-Ace 9000 52t 110mm 11-Speed Chainring for 36/52t MFPN=2701918 The lens is in X-PC

The lens is in X-PC material and also delivers complete UV protection

With no mounts or screws the bag attaches in seconds to any bike

Length 110 Lock Style Keyed Diameter 6

Manganese: 7mm rails made of a Manganese and CrMo alloy for excellent durability and value

SRAM FlatTop BCD Direct Mount SRAM 8 Bolt Speed 12

Shimano Dura-Ace 9000 52t 110mm 11-Speed Chainring for 36/52t MFPN=2701918 The lens is in X-PCThis Shimano chainring allows you to update your Dura Ace FC 9000 11 speed crankset with a chainring configuration to best fit your riding style. Integrates Shimano Hollowglide Technology: the high rigidity hollow structure cuts down on weight yet maintains strength to provide better power transfer and quicker more precise front shifting Features a weight saving 4 bolt design with a BCD of 110 mm Ideal for road cycling Ring Position Type Outer Tooth