These stackable headers are made to work with the SparkFun Qwiic Shield for Arduino Nano or any comparable shield to connect the shield with a Arduino Nano footprint. This set includes two 15-pin headers; the pins are spaced by 0.1". Each set of headers allows you to stack a Qwiic Nano shield on top of your Arduino Nano or plug them into a solderless breadboard. Note: Soldering is required for functionality and physical attachment to a shield or board. https://elecena.pl/product/16602937/arduino-nano-stackable-header-set 2020-04-24 https://elecena.pl/product/16602937/arduino-nano-stackable-header-set 2022-02-21 https://elecena.pl/product/16602937/arduino-nano-stackable-header-set 2025-04-12 https://elecena.pl/product/16602937/arduino-nano-stackable-header-set 2025-04-14