Description: Useful: This kind of bicycle chain guide can protect and guide the chain effectively, protecting the chain from slipping or jumping, making your riding smoother and easier. Sturdy: Made from aluminum alloy material, this mountain bike frame protector is durable and long-lasting, serving you for long-term use without being damaged. Easy to apply: This bicycle chain tensioner is suitable for single-disc sprocket, which can replace the old one and repair your vehicle easily, you can order according to your needs. Adjustable: You can adjust the guide with a wrench without needing to ratchet the crank, making your repair more convenient and saving your strength. Applicable: This kind of chain guide is suitable for MTB, which is lightweight and small, and the surface is smooth without burr, not easy to make trouble for you. Specification: Material: aluminum alloy. Color: red, for purple, gold. Size: approx. 12*10*5cm/4.72x3.94x1.97inch. Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. Package Includes: 1 Piece Bicycle Chain Guide(with 4 Pieces Washers, 1 Piece Frame Protector).