Product review (5 stars): Fits perfectly.
My house was built in the early 60's and I still have the original kitchen cooking stove and oven.  This product is an exact fit.  The 6" and 8" fit just like they are suppose to.  Of course I measured the diameters of the flanges on the stove where the drip pans sit before I ordered, just to be sure.  Here are 2 pics after installation.