Mounting a TV on a chimney breast
1/4 diameter, 1.5 to 2 inch long (depending on bracket thickness) Tapcons. This is not an ad, it's what I've been using for 20+ years. They will not penetrate the inside of the chimney. Its painted so holes in the brick are a non-cosmetic issue. A wrap-a-round metal band would look like it's from the 80's and not anywhere near as strong. You can have as large of a TV as you want if your willing to drill some extra holes in the mounting bracket and "tapcon the hell out of it".