This is a standard 12mm square momentary button. What we really like is the large button head and good tactile feel (it 'clicks' really well). This button is great for user input on a PCB or a good, big reset button on a breadboard. Breadboard friendly! https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2009-04-25 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2016-11-25 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2016-11-28 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2016-11-29 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2016-12-09 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2016-12-13 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2017-11-24 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2017-11-28 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2018-05-05 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2018-11-21 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2018-11-27 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2019-12-09 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2019-12-14 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2022-02-21 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2025-04-11 https://elecena.pl/product/842086/momentary-pushbutton-switch-12mm-square 2025-04-14