This GPIO header kit includes four 20x2 pin GPIO headers, compatible with various circuit boards featuring GPIO interfaces. The expansion board allows one GPIO pin to be expanded to two. It features a 2x20pin double row connector that increases pin height for easier connection between the expansion board and other components. It also includes a 2x20pin bent row pin header, with the GPIO direction perpendicular to the board, facilitating connections with other devices. To use, first solder the pins to the PCB, then insert directly into the target board. Specifications: Name: GPIO Header Kit Color: Black Material: ABS + Metal Package Contents: 12 x GPIO Header Note: Only the items listed are included. Other products shown are not part of the package. Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.