Corey...I know they have been around for a really long time, and they seem to specialize in providing slates for T-rail antique tables, although they make plenty of their own too. I drove to L.A. from MT many years ago, to pick up replacement slates for a table restoration project. I had ordered what I needed from them, but they sent the wrong thing. We couldn't arrive at a satisfactory solution, so I ended up roadtripping down there and back, to get the correct ones!
Very high end, price wise. I have a friend who owns car dealerships who has 2 and the are both fancy, and EXPENSIVE. Probably not 'players' tables, but on the upper end of furniture style tables.