This Boost MTB chainring is specifically designed for compatibility with any cranks using the SRAM Direct Mount (DM) interface, making it a great choice of upgrade for smooth and reliable performance on your trail adventures. DMR has also ensured that this chainring is compatible with Shimano, KMC and SRAM 10, 11 and 12 speed chains for easy integration with your existing set-up. Boost MTB Chainring with Wide/Narrow Tooth Design Ready for hitting your local trails, this 12 speed chainring is kitted out with a Wide/Narrow tooth design for ultimate chain retention and when combined with a clutch mech, no chain device is needed. As a result, riders can save 100g on their spider, chainring and chainring bolts setup. With a 3mm offset and a range of tooth configuration options to choose from, the DMR Blade 12 Speed Boost Chain Ring offers dependable performance without adding any unnecessary weight. Manufacturer's Part Number: DMR-CW-BLADE-B-12-30T Blac DMR-CW-BLADE-B-12-32T Black DMR-CW-BLADE-B-12-34T Black DMR-CW-BLADE-B-12-36T Black