The Squid Button is a momentary action push switch with trailing leads that end in female header sockets that will fit over GPIO pins on a Raspberry Pi, Node MCU or Raspberry Pi Pico.
To reduce the chance of accidental short-circuits when using the Button, each Button has a built-in 470Ω resistor that does not affect the switching action when connected to a GPIO input, but does mean that if the switch is accidentally connected across power connections your Raspberry Pi will not come to any harm.