104 bcd 4 bolt round chainring with patented Drop-Stop® design for improved chain life, chain retention.Drop-Stop B chain compatibility optimized for SRAM 12-speed drivetrains (T-type) and Road Flattop chains.Features.-Use:MTB.-Type:Round.-Anchoring/Mounting:Bcd 104mm.-Weight according to sprocket:32T - 41g 34T - 48g 36T - 55g.-Material:Aluminum 7075-T6.-Color:Black.-Made in the USA.USA.Compatibility.-Chainring compatible with any 104 BCD crankset.-Designed to meet the requirements for electric bicycle use.-Wolf Tooth´s patented Drop-Stop® wide/narrow tooth profile for maximum chain retention and sludge removal capability.-For 1x9, 1x10, 1x11, 1x12 drivetrains (including SRAM Eagle).-If using a 9-speed drivetrain, use a 10-speed chain (shifts and works well on a 9-speed drivetrain and adjusts the chainring tighter for better chain retention).-Quarq power meter compatible with 34t and 36t sizes.Filing is required for 32t mounting on some older Quarq Power meters.No modifications are required for the DUB Quarq Power meter.-Threaded to use M8 pan bolts (no nuts required).-Maximum diameter is that of a chainring 2 teeth larger than the size you order (so make sure there is enough clearance for the chainstay).-Drop-Stop B chain compatibility:compatible with all SRAM Eagle, SRAM Road and Transmission (T-Type) Flattop chains, 9, 10 and 11-speed chains or KMC 12-speed, Connex, Wippermann, Campagnolo.-*Not compatible with 12s Shimano HG+ or 13s Campagnolo chains.Recommendations:-If you plan to ride in very muddy conditions, we recommend a chain guide (such as GnarWolf or LoneWolf ) in addition to a clutch-type rear derailleur.Without these precautions, you may experience chain falls and/or chain slippage.Recommend the use of a clutch style rear derailleur for the best chain security.