Features: *brand new *Made of materials, and practical *CNC aluminum alloy mountain bike color crank cover BB central axisscrew sprocket specifications *Aluminum alloy CNC machining, precision & strength, much better than the plastic screws. *Various colors, suitable for personality modification. *for bike crank set Specification： Size: M 18 Material: Aluminum Alloy Weight: 7g Color:black, red, gold, blue, colorful * threaded screws are suitable for PROWHEEL hollow chain ring *FS.A crankset and the old FC 4500 and FC 5600 highway cranksets, etc. Crankset etc. If you are not sure about the specifications, please measure by yourself. Package includes: 1pc Crank Bolt Cover Cap Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Compatibility - MTB Road Bike CrankArm Fixing Bolt Crank Cover Crankset Screws bolt Good Performance Materials - These bike accessories are made of premium material, ensuring their durability and long-lasting performance. Optimal Performance - These accessories offer versatility and adaptability to different cycling needs and provide optimal performance and reliable functionality enhance the riding experience and ensure safety. Easy Installation - These accessories can be easily installed on your bike to get your bike running again. After-sale Serive - We provide high quality products, if there is any problem with our product, please contact us.