Cover 31.8 34.9mm Clamp Protector Bike Chain Guide Chain Stabilizer Tensioner Bicycle Chain guide

Label:Yes Package includes:1 pc chain guide Size: As Picture Material: Nylon plus fiber + Saigang engineering plastic Color: Black Weight: about 45.3g Spec: 31.8MM-34.9MM mount / E type mount

Features: It can effectively prevent the chain from falling off and the jumping of the chain. It is used for a single-piece flywheel, and the running is more stable. The installation is simple and convenient. It can be adjusted with a wrench without disassembling the crank.