Feature:1. Compatible: The bike crank chainring adjuster is compatible for SRAM DUB cranks (for XX1 Eagle DUB, for X01 Eagle DUB), but the inner ring with flange is not compatible for Fat Bike cranks.2. High Strength: The bike crank chainring adjuster is made of high strength aluminium alloy, which is durable and can withstand high pressure.3. Easy to Install: The bike crank chainring adjuster is easy to install, quick and easy to adjust, and easy to mount on the bike's crankshaft.4. Enhances Performance: The bike crank chainring adjuster helps to improve the bike's performance by providing optimal chainring alignment. This helps to reduce chain wear and prolong the life of the bike's drivetrain.5. Smooth and Reliable Operation: The bike crank chainring adjuster provides a smooth and reliable operation, ensuring that the chainring stays in place during the ride. It also helps to eliminate any unwanted noise or annoying vibration, providing a smooth and enjoyable cycling experience.Specification:Item Type: Bike Crank Chainring AdjusterMaterial: Aluminium AlloyDiameter Spindle: Approx. 28.99mm / 1.14in.Package List:1 xBike Crank Chainring Adjuster