Feature:1. The pins of for Raspberry Pi have been expanded, suitable for RaspberryPi 400 interface2. At the top of the terminal, there is the information of the GPIO pin, which is convenient for you to view and operate3. Made of goodquality PCB material, which is durable with long life and stable structure4. This product can be used for interface transfer module, interface extension5. This is a double row expansion board, which possess larger area and higher efficiencySpecification:Item Type: Expansion Board Material: PCBPurpose: Interface transfer module, interface extensionSpecification: Double rowSize: Approx. 40.2mm / 1.6in56.2mm / 2.2in51.2mm / 2in33.3mm / 1.3in24.8mm / 1in.Package List:1 x Expansion Board4 x Brass Pillar1 x Screw Pack