Protective Function: The Bicycle Crankset Chain Wheel Cover Protection is designed to prevent the chain from jumping out, protecting your bike's crankset group and enhancing its aesthetic . Protect Your Pants: This Bike Chain Wheel Protective Cover helps to prevent your trouser leg from getting caught in the chain wheel gears during cycling, thus avoiding tears and oil stains. Premium Material: Crankset Guard is made of plastic, and is stable and lightweight, making it a practical addition to your cycling gear. Suitable For: This repair part is suitable for 40-42 tooth chain wheels with a hole spacing of 6.5cm/2.56inch, making it applicable for 5 holes crankset groups. High Performance: With its functional design and sturdy construction, our Bicycle Chain Wheel Cover Protector ensures long term protection for your bike's components while enhancing safety during rides. Specification: Material: Plastic Size Chart: 6.5cm/2.56inch Package Includes: 1 Bike Chainring Guard Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!