Equipped with a super lubricated anodized "Tefloid" feature. BaroqueGear patented on September 3, 2020. Please be aware of counterfeit products. 34T ±2 90° 4 hole PCD110 *Compatible with both 12 and 11 speeds. Shimano Compatible Crank *4 Arm Only Compatible with 12S FC-R9200, R8100, R7100, 11S FC-R9100, R8000, FC-900, FC-6800, FC-5800