They fit my larger stove dials. I have a frigidair gallery series gas stove. The dials are about 2.25 inches in diameter and stick off the stove about 1.5 inches. I think that these would be cumbersome on a stove with the smaller dials like many of the older white electric ones.
My only issue is that the plastic is a smokey gray instead of clear. The smokey gray looks nice, but when the covers are on and open so I can use my burner I cannot see my heat level/setting nor when I am on "lite" well.