The Chastity Steel belt for men series: CS-500 /A http://www.keuschheit-cb.de/shopcb/product_info.php?info=p72_CS-500--A-Eichel-offen.html
This is going to be my next chastity belt... it's kinda expensive (about $900) but I love the look and I'm sure it would support well. I hate chastity belts that wear like a thong because you could never wear it full time without major concerns for sanitation (unless you spend hours trying to clean it while still wearing it after using the bathroom).
Here is a picture of another model (no open end) with someone wearing one. Anyone have any experience wearing one?