Feature:1. High Quality Material: The cover is made of premium aluminum alloy, which is firm while light in weight, resistant to rust and has a long service life.2. Compact Size: The overall shape of the mountain bike crankshaft dust cover is light and compact, with high hardness and easy installation.3. Professional Production: The crank dust cover is CNC cut and anodized, the appearance is smooth and shiny, it is a good decoration for your vehicle.4. Wide Application: With two rubber rings and good sealing performance, suitable for most of the 2225mm diameter onepiece hollow crankset.5. Long Service Life: The crankset dust cover has undergone extensive quality and safety testing to ensure higher working efficiency and strong durability.Specification:Item Type: Crankset Dust CoverMaterial: Aluminum Alloy Application: For 2225mm/0.9-1.0in diameter onepiece hollow crankset..Package List:1 xCrankset Dust Cover with Rubber Ring1 x Rubber Ring