Application??This belt is replacement for GY6 50CC motorcycles.The part number is 669 18 30. Please confirm the product information in advance before purchasing drive belt products,thank you for your cooperation. Highquality neoprene rubber material??Serpentine belt,made of highquality neoprene rubber material, strong and durable in long term use.Oil resistance, heat resistance, long driving range and reliable performance.It is a very practical product. Product function: Transmission drive belt is produced with original specifications, perfectly matched with your motorcycle, and can directly replace the old or damaged drive belt. Easy to Install and Use: It is very easy to install, you can easily complete the installation without complicated tools, and it is easy to use, saving you time and effort. Strict Factory Inspection: Every product that arrives in your hands undergoes strict factory inspection to ensure quality and safety. Please rest assured to buy and use. About Us is a