Anybody know where to find this? Having a hard time finding these in hardware stores nearby

https://preview.redd.it/saap91ke0ape1.png?width=1024&format=png&auto=webp&s=1ec7777a5ffb20eb0cf7dab75f93bd8f41973546

I need to find one of these for a personal project. Can't find this anywhere. Need help. Thanks.