A. Features: - Premium Material: This crank hat is made of aluminum alloy material, with high strength, corrosion - resistant, sturdy and durable features. It has anti - rust, colorfast, lightweight and long - lasting characteristics. - Distribute the Pressure: This crank hat can distribute the pressure of the nut over the part being secured, reducing the possibility of damage to the part. With fine design and precise machining, it fits the crank well and offers professional fixation of the crank. - Great Decoration: Mountain bike crank bolts come in different colors for you to choose from, meeting different needs. The bright color makes it a good decoration for your bikes. - Easy to Install: This bike crank bolt is lightweight, easy to install and use. It fits most mountain bikes with a hollow shaft. - Range: It is a nice accessory for the bike chainwheel. It is used to fix the crankset and crank of the chain wheel, which is a good accessory for cycling enthusiasts. B. Specifications: - Name: One - piece hollow crank cover screw - Material: Aluminum alloy - Net Weight: About 8g - Color: gold - Features: High - strength aluminum alloy material, CNC turning, surface anodizing, fine workmanship, laser processing, complete specifications, multi - color optional - Model: M20(2*1.2*2.8cm) C. Notes: Due to the effects of light and shooting angle, the actual color of the item may slightly differ from the color shown on the picture. D. Includes: 9 * Handle cover screw