GeeekPi 2x20 40 Pin Stacking Female Header Kit for Raspberry Pi 4B/3B+/3B/2B/B+/The 40pin header kit box is a full range of 40pin component boxes for electronic enthusiasts DIY. Packing List: 2 * 2x20 Long Female Header (Pin Len: 12mm), 2 * 2x20 Long Female Header (Pin Len: 11mm), 2 * 2x20 in-line female row (Pin Len: 5.5mm), 2 * 2x20 straight Pin Header, 2 * 2x20 90 Degree Curved Pin Header, 2 * 2x20 90 Degree Curved Pin Header,1 * GPIO Edge Extension Application: It can be used for Raspberry Pi pin expansion, and it can also be used for all 40pin pins. Occasion, such as Tinker board, jetson nano and other standard 40Pin equipment pin extensions, etc. Stacking header for Raspberry Pi 4, Pi 3, Pi 2, Pi Model B+, Pi A+, Pi Zero, Pi Zero W, Pi Zero 2, Pi Zero W2