This is a black plastic bezel, custom made to mate with the silicon rubber pads. Black 1/8" ABS plastic. We use four 4/40-0.5" size screws matched with plastic standoffs to attach the 2x2 button pad and Simon project boards. Using two of these bezels with two of the bottom bezels will create a 4x4 bezel appropriate for the full button pad. Documents: * Dimensional * Multi-Unit Assembly * 3D Model https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2008-07-18 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2008-09-23 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2008-10-18 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2016-11-25 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2016-11-28 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2016-11-30 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2016-12-09 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2016-12-13 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2016-12-26 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2017-01-10 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2017-11-24 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2017-11-28 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2018-05-05 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2018-11-02 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2018-11-21 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2018-11-27 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2022-02-22 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2025-04-11 https://elecena.pl/product/706552/button-pad-2x2-top-bezel 2025-04-14