The all new DMR Blade chainring is now 12 speed compatible. The DMR Blade chainring is now 10, 11 and 12 speed compatible. The DMR Blade MTB chainring has a Wide/Narrow tooth design for ultimate chain retention and when combined with a clutch mech, no chain device is needed. This DMR chainring is manufactured from stiff 4mm wide 7075-T6 Aluminium maintaining direct power transfer. Superlight: 30T- 63g | 32T- 67g | 34T- 74g | 36T- 85g. Save 100g on your spider, chainring and chainring bolts setup. DMR Blade chainring is compatible with any cranks using the SRAM DM interface. Wide/Narrow tooth design for maximum chain retention. Specification Stiff 4mm wide 7075-T6 Aluminium. This direct mount chainring is compatible with SRAM DM interface. Fits Shimano/KMC/SRAM 10, 11 and 12 speed chains. 6mm offset for standard rings, 3mm offset for Boost.