Features: Craft from aluminum alloy, this crank cover is light weight yet strong, ensuring great strength without adding unnecessary weight to your bicycles. Enhancing your cycling performances with our aluminum alloy bike crank cover, designs to provide great protections and longevities for your bikes crankset. Perfect for use in various cycling environment, from rough mountain trail to smooth city road, offering versatilities and adaptability to different biking adventure. This essential bike accessory not only safeguards your crankset but also adds a fashion, polishing look to your ride, making it a must having for cyclists. Great for cycling enthusiasts and professional bikers seek safe component to maintain their bikes in top condition. Specifications: Materials: Aluminum Alloy Color Optional: 4 Color is Available as Shown in the Picture. Package Weight: approx.10g Type: M 18/M 19/M20 (Optional) Size: As The Picture Shows Package Includes: 1Pc Bike Bottom Bracket Caps note: Please allow 1-2cm error due to manual measurement. Please make surer you not mind before your bid. Due to the differences between different monitors, the picture may not reflect the actual color to the item. Thanks!