High-strength aluminum alloy material for durability and resistance to rust and corrosion. Three-dimensional pattern dust cover with fine workmanship and strong texture. Sealed and waterproof rubber ring for added protection. Compatible with common brand integrated hollow chain rings and various aperture sizes. Available in multiple colors to showcase your personality and style. Introducing our crank dust cover, a must-have accessory for all bicycle enthusiasts! Made with anti-deformation and wear-resistant features, this crank cover set is built to last. Its compact design ensures easy installation and maintenance. The surface of our crank dust cover undergoes CNC precision forging anode process and hardening heat treatment. This not only enhances its surface hardness but also keeps it looking beautiful without fading over time. Designed to fit most bicycles including mountain bikes, road bikes, and folding bikes, our crank dust cover is made from high-strength aluminum alloy material. It is resistant to oxidation, corrosion, and rust. The three-dimensional pattern dust cover adds a touch of style with its fine craftsmanship and strong texture. Equipped with a sealed and waterproof rubber ring, our crank dust cover comes with 18/20MM rubber rings that are compatible with common brand integrated hollow chain rings. It can be easily installed with an aperture of 21-23MM. Our crank dust cover is CNC precision cut for a seamless finish. The meticulous workmanship ensures smooth edges and uniform incisions. Choose from a variety of colors to showcase your personality and add a unique touch to your bike. Item Name: Crank Dust Cover Material: Aluminum Alloy Features: Replacement, High Strength, Colorful Size Details: Diameter: 2.59cm(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Crank Dust Cover 1 x 20mm Rubber Ring 1 x 18mm Rubber Ring