Large Capacity This fuse and relay box can hold a maximum of 6 relays and 11 fuses at the same time, large capacity design, can create multiple relays in one box, keep your circuit clean and tidy. 40A Relay This automotive 12V relay box will be equipped with 6 pieces of 40A 4-pin relay, providing the highest capacity to make its application wider and safer. Fuses of various sizes This automatic fuse block will also come with 11 Atc Ato fuses, including 2 blade fuses 5A, 2 X 10A, 2 X 15A, 2 X 20A, 2 X 25A and 1 X 30A and 10 replacement fuses 2 X 10A fuses, 2 X 15A, 2 X 20A, 2 X 25A and 2 X 30 A Pre Wired Convenient This fuse relay box is pre-wired design, which completes half the connection work and leaves only the necessary installation processes for you and establishes the connection. This relay fuse box becomes much more convenient and easier for you. Application The waterproof fuse relay block aims to provide a reliable and safe environment for the use of the device and keep the connection systems clean and tidy, suitable for automotive, car, truck, marine boat, etc.