1.Ensures smooth cycling: This chain guide is made of a highstrength aluminum alloy and is designed for durability. It is suitable for 32T38T chainrings. It enhances the riding experience by preventing drops and breaks, ensuring maximum power transmission and consistently smooth cycling. 2.With disc guard: Our bicycle chain guide is equipped with a disc guard to protect your chainring from the harmful effects of mud and stones underneath. The nylon material ensures longer durability and lasting performance of your bike's components. 3.Reduce chain vibrations: Achieve a smooth and even chain rotation on your bike with our guide. Our builtin pulley wheel made of robust steel ensures high efficiency, while the tension control reduces chain vibrations and the chain guide structure rotates gently, providing optimized chain control. 4.Improved bike performance: Enhance your bike ride with our bicycle chain guide. Thanks to the secure design that prevents the chain from falling off, ensures more stability, and extends the chain's lifespan, you can ly navigate any terrain and all tubes within the frame.