Hart razors are quarter hollow ground. They are big hefty blades, particularly the 7/8, and really just stupendous shavers. I reach for mine more than any of my other razors. The only other option that comes to mind is some of the custom makers. Dovo might make a wedge, but I believe it is a 4/8, so if you are looking for heft that isn't the answer. Whacker may also make a few 1/4 hollows, but I'm not positive about that.