Bicycle Part Chain Guard Lightweight Bicycle Chain Guard for Cycling Description: Material: The bicycle chain guard is made of material, lightweight and long time use. Bicycle Chain Guard: The bicycle chain guard is designed to protect your bicycle chain from dust, water, stones, etc. Installation Instructions: 1. Remove the middle roller. 2. Place it in a fixed bracket 3. Reinstall the center roller 4. Make sure the bracket is installed correctly and do not install it upside down. 5. Reinstall the shield. 6. Put the chain back on. 7. Put the chain guard on. 8. Attach the chain guard with screws. 9 . Attach the tail of the chain guard. (please pre-place the hole. ) Minimalist design: The bicycle chain guard measures 54 cm x 19 cm / 21,26 inches x 7,48 inches and is designed in a simple and modern way. Specification: Suitable for: 38-40 T Size Chart: 54 cm x 19 cm/21,26 inch x 7,48 inch The package includes: 1 set bicycle chain guard