Check the listing for details. absoluteBLACK Round Boost Chainring for SRAM - 30T. Color: Black, Condition: New. Listed at 84.95 USD. absoluteBLACK Round Boost Chainring for SRAM - 30TThe absoluteBLACK Round Boost Chainring for SRAM is compatible with SRAM cranksets that use the 3-bolt interface. Made from 7075-T6 aluminum, the chainring is lightweight and stiff and its anodized finish provides an unique look and great quality. This chainring also features a narrow-wide tooth profile to keep your chain in place, while the 3D machining offers mud relief, decreased wear and quieter operation. Advantages to aB Direct Mount RingsUnique anodized finish and great qualityExcellent weight to strength ratioPatent Pending alternate wide-narrow tooth profile to keep your chain in place3D machining for mud relief, decreased wear and quieter operationLess weight as you don’t need spider and chainring boltsThe ability of run smaller chainring sizes CompatibilityCrankset: Compatible with SRAM cranksets that use the 3-bolt interfaceChain: These chainrings are designed to work with all 9-speed, 10-speed, and 11-speed chains. They also work with 12-speed Eagle and 12-speed KMC chains SpecsColor: Black Interface: SRAM Direct MountOffset: 3 mmChainline: 52 mm BoostMaterial: CNC machined 7075 aluminumWeight: 30T - 50 grams Why Buy from Power Meter City1. We ship fast! All orders ship on the same day your order is placed!2. Free shipping on all orders in the U.S.3. We are an authorized absoluteBLACK dealer and this product comes with a full warranty.4. Expert advice and customer service in case you need any help.5. We offer a free, 30-day return policy on new items. About our CompanyAt Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service.We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.