Features: This product features a waterproof box that effectively prevents water and moisture from entering the holder, ensuring reliable shielding. With different power available (20A, 30A, and 40A), this product caters to various circuit requirements, providing flexibility and convenience. Designed for professionals in automotive maintenance and repair, this product meets their needs for upgrading and replacing holders. Perfect for various electrical systems like lighting and appliances, this product offer stable connections and dependable performances. Not limited to vehicles, this product is also suitable for boats, RVs, and other electrical systems that require reliable shielding. Specifications: Material:Plastic Size:As Picture Shown Contact switching current: 20a, 30a, 40a Package Includes: 1 Set Inline FuseHolder Box note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.