Clip on rear view mirrors?

[moab]

My wife has one of these on her van. And it's great. The rear view mirror in my 2007 GMC Yukon XL is kinda small. I can only see a limited area with it. But everytime I buy one of these the clamps aren't big enough for our rear view mirrors. And either won't go on or bends the mirror and makes it hard to look at.

This one actually says it fits a GMC yukon in the search result description. Anyone bought one that fit?

http://www.ebay.com/itm/Broadway-27...ash=item3608be2888:g:jI0AAOSwvzRX0MSN&vxp=mtr