The MTB Bicycle Chain Guide Frame Protector is designed to prevent the chain from falling off and reduce chain beating. It is made of high-quality nylon plus fiber Saigang engineering plastic, ensuring durability and reliability. With a weight of approximately 45.3 grams, it is lightweight and does not add unnecessary bulk to your bike. This chain guide is compatible with bikes that have a 1x drive system for one-piece sprockets. It can be easily installed using a wrench without the need to remove the crank. The installation options include 31.8MM-34.9MM installation or E type installation. With the MTB Bicycle Chain Guide Frame Protector, your chain will stay in place, providing a more stable and efficient riding experience. Say goodbye to chain drops and enjoy a smoother ride. This chain guide is a must-have accessory for any mountain bike enthusiast. Package Included: 1*Chain guide Key Features: Prevents chain from falling off Reduces chain beating Compatible with 1x drive system Easy installation without removing the crank Made of durable nylon plus fiber Saigang engineering plastic Lightweight design (approximately 45.3 grams) Improves stability and efficiency of the ride Essential accessory for mountain bike enthusiasts