Package Contents: 1 set containing 6 packs. Quality Material: Made of sturdy ABS and galvanized iron for extra durability. Screw Selection Guide: If your trampoline frame only has an iron bar with holes, use round screws. Trampoline Compatibility: To identify the correct screws for your trampoline, please refer to the detailed images in our product description, paying special attention to the installation effect on the trampoline's base support. This product is sold by xiaosong on behalf of a third-party seller; it is a compatible product. None of the products offered in this store come with two batteries; they are powered by a single battery. Note: 1. Due to variations in lighting and screen settings, the product color may differ slightly from the images shown. 2. Please allow a measurement error of 1-3 cm due to manual measurement. 3. Please check that the size is suitable before purchasing. We sincerely thank you for your understanding! Thank you!