Waterproof Relay Box: 12V relay box is equipped with a top cover and a bottom cover. The box is made of high-quality material, flame-retardant and waterproof, and safe, the overall structure is solid and the quality is reliable. High Quality: Relay box is designed with 6 slots, 5 slots for 5-pin relays, 1 slot for 4-pin RTT7121 relay and also for 6-slot ATC/ATO fuse relay base. The high quality is safer to use. 41 Suitable Terminals: It is equipped with 41 suitable relays and fuse terminals, allowing you to install and use the fuse and relay box immediately and easily. Easy to Install: Relay box includes all necessary connection pins. It has a cable opening hole, which is the outlet of all wires and can be connected together. You can completely install and easily replace the relay and fuse on the back of the fuse relay box. The brackets on both sides of the box allow it to be mounted on any wall inside cars. Color: Black Material: ABS Package Contents: 1 x Fuse Relay Box with Top