SRAM T-Type Direct Mount Eagle - GX D1 Chainring Rugged Durability If you're looking to get maximum performance from your drivetrain, then you'll want to get Eagle. The SRAM T-Type Direct Mount Eagle - GX D1 Chainring is finished with a distinct, dual-spoke design so your shifting will never be compromised. It has an 8-bolt direct mount and is compatible with T-Type chains. Features Compatible with T-Type chains Finished with a distinct, dual-spoke design Available in several different tooth counts8-bolt direct mount and +3mm offset SPECIFICATIONSDrive Train Speed12-Speed Tooth Count30T, 32T, 34TMaterial Aluminum Direct Mount Type8-Bolt Direct Mount Chainline-Offset+3mm Intended Use MTBWeight N/AChainline/Chainring Offset Guidelines Rear Spacing135mm / 142mm148mm Boost Super Boost 150mm / 157mm Fat Bike (170mm, 190mm, 200mm)Chainline48 - 50mm51 - 53mm54 - 56mm56mm+Chainring Offset~6mm~3mm~0mm~+2mm | Sram | T-Type Direct Mount Eagle - Gx D1 Chain Ring Cr T-Type Eagle 30T Dm 3Mm Plr Gx | Aluminum