Decent quality cheap button. I bought two red ones and added my own cherry dx44 switches and 5v red led.
The buttons come with a spacer ring and a bolt ring to tighten them in position. They also have the led mount. Easy to put together.
The gold colour looks good, not as deep as the metallic gold on the Sanwa buttons, but okay.
I like that you can spend the money you saved on these buttons on a decent switch and LED of your choice, it allows you to customise your button components.
I bought them for pinball flipper buttons, and they look like they will be able to take the abuse.
These are not sanwa quality, but make great buttons for other than mashing.