The 7" has the thinner profile like the 10", .35".
7" Diameter: .35
9" Diameter: .4
10" Diameter: .35
10.5" Diameter: .4
12" Diameter: .45
14" Diameter: .45
One thing I'll throw out there is the style of cut makes a difference as well. All of these dimensions are at the widest point.
Jason