Race Face Turbine 9-11sp Chainring. Features: CNC 7075 aluminum with asymmetrical tooth profiling and more upshift and downshift zones for consistent, instantaneous, quiet shifting even under load 3x10 speed optimized for Race Face cranks, 2x10 rings optimized for both Race Face and SRAM cranks Note: the wings on the 22t ring will contact the BB when used with a BSA30 bottom bracket Specifications: Teeth: 24T, 26T, 28T Ring Type: 2x (Inner Ring) Mount Style: 4-Bolt BCD: 64mm Offset: N/A Speeds: 11 speed Shape: Round Material: 7075 Aluminum Weight: TBD Color: Black