Product review (4 stars): Sure would be easier to buy with better product description
There is nothing to explain how to measure the size.  It is NOT the outer rim diameter of the pans.  It IS the size of the stovetop hole itself into which the pan drops.

The description variously says "10.8 x 10 x 2.5 inches" . . . and "2 to 6-inch and 2 to 8-inch."  Perhaps the first numbers are the package size.  The second numbers are, in fact, the size of the opening -- give or take ".

Further, on the packaging it says "Fits most plug-in electric ranges including Amana, Crosley, Frigidaire, Maytag, and Whirlpool.  Will not fit GE or Hotpoint ranges."  That sure would be helpful in the listing.

I hope this reduces confusion for others.

As for the product itself, they seem to be well made.  They are about the same weight as the original equipment.  The finish is glossy and even.  And they're made in the U.S. so I'm happy to give them a run.