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- Machined 7075-T6 aluminum chainring intended for 1x1/9/10/11 and 12sp drivetrains\n- Narrow-wide tooth profiling prevents chain drop without a chain guide\n- The shape, width, and height of the teeth are CAD designed and optimized for 1x drivetrains\n- The design offers more contact with the chain rollers for better wear resistance of both the chainring and the chain\n- Positive engagement prevents chain slippage and makes for a very quiet drivetrain\n- 100% made in the USA