Feature:1. Aluminum Alloy: Using high strength aluminum alloy material with fine workmanship, the screw has high hardness, not easy to deform.2. Anodizing Treatment: The face is anodic oxidation treatment for bright color, the crank cover is corrosion resistant and not easy to fade.3. High Reliability: After two smooth cleaning treatments, the meticulous craftsmanship makes the bolt high reliability.4. Compact and Portable: The shape is small, light and portable, does not take up space, and can be placed anywhere.5. High Performance: CNC accuracy machining, the crank arm fixing bolt has high hardness, more wear resistance and more stable work performance.Specification:Item Type: Crank Cover Screw CapProduct Type: RT122 Crank Cover for Star Socket Screw ShapeMaterial: Aluminum AlloyProduct Bottom Inner Diameter: Approx. 20mm / 0.8inProduct Weight: Approx. 36g / 1.3oz.Package List:1 x Crank Cover Screw Cap