Type: 4-bolt for use with Shimano FC-9000 52T chainring Y1N298120 (excluded) Brand Shimano MPN Y1N238000 Bolt Center Diameter 110 mm Teeth 38t For Bike Type Road Bike - Racing Color Black Type Chain Ring Model Dura Ace 9000 UPC Does not apply Part Type Bicycle part ColorBlack MaterialAluminum Chain CompatibilityShimano 11 BCD110mm Teeth38T .
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