5pcs Relay Connector Socket Fit for 4 Pin 5 Pin Relay Fuse Box Condition:new Qty5pcs Relay Connector Socket This relay socket is suitable for the 15-slot relay box FB-15T. These sockets support 4-pin and 5-pin universal relays. The detachable design allows for flexible arrangement of these bases, making it ideal for DIY enthusiasts. Made of high-quality flame-retardant nylon, it is durable and safe with a robust overall structure.