Mirrors

Does anyone know where I can find some bar end mirrors that can be mounted using the 6mm bolt for the bar ends? I'm hoping to find some that are small (2"), round, and black. I have found many like this (although most are 3"), but they have a mounting mechanism that spreads as you turn its screw. This is no good unless I totally drill out my bars. Also, all of the ads say that they could clamp around standard 7/8" bars; I measured mine with a verneer caliper, and they are just a hair shy of 1" (far from 7/8"). Are they talking about inside diameter? Even if the clamps do fit around my bars, there is NO space to move the grip and controls in at all on the left side. My stock bar ends are much wider than the bars, too. Anyone have any ideas?