1. Robust construction: This bicycle chain guard is made of highquality PP material and is characterized by excellent impact resistance, making it a beautiful addition to your bicycle equipment. Its lightweight and wearresistant design ensures durability and a smooth ride at all times. 2. Perfect fit: This bicycle chain guard is designed for chainrings with 40–42 teeth and 5hole cranksets with a hole spacing of 6.5 cm/2.56 inches, making it ideal for a variety of mountain bikes and road bikes. Its perfect fit ensures seamless installation and high performance. 3. Chain : Avoid damage from falling chains, prevent the chain from jumping off, and protect your bicycle's crankset, making your bikes more attractive and enhancing the overall aesthetics. 4. Improve the of your bicycle: Provide top functionality with a robust structure to ensure longterm protection of your bicycle's components during daily rides and longdistance trips, while also improving the of the rider.