SRAM 11 Speed 50T 110 BCD X-Sync Bicycle Chain Ring SRAM X-SYNC 1x chain rings provide the highest level of performance and durability SRAM X-SYNC wide-tooth, narrow-tooth chain ring technology provides maximum chain control, crucial in 'cross The sharp and narrow tooth profile as well as rounded chamfer edges help manage a deflected chain Designed by SRAM in Germany, X-SYNC rings are an integral part of the SRAM 1x drivetrain Weight: 90g (42T)