LOLA 107 Bcd single chainring compatible with SRAM Red/Force AXS cranks.Compatible with all 9,10,11 speed chains, SRAM MTB 12 speed (Eagle&T; type), KMC, Shimano HG+, SRAM AXS Flattop chains.FeaturesType:RoundUse:GRAVEL / CX / ROADMounting:Bcd 107mm, asymmetric.Material:Aluminium alloy 7075-T651Colour:BlackWeight according to teeth:36t - 74g 38t - 86g 40t - 96g 42t - 98g The special tooth shape ensures closer contact with the chain and smoother pedalling (compared to normal chainrings).Bevelled edges and wide mud space prevent the chainring from getting dirtyVariable tooth thickness prevents the chain from dropping off the chainCompatibilityCompatible with:SRAM Red/Force AXS cranksets107 BCD chainrings are designed for use with power meters.36t chainring will not work with 107 BCD power meterCompatible with chains:10/11/12 speed:including Shimano HG+ and SRAM AXS flattop chains (incl.T-type).