Improved standard 3 7/8" fit-ups. Tthe case mold part behind the clock dial has a solid surface. This will eliminate the possibility of the dials warping or changing shape.
A metal bezel and a soft gasket mounting system that fits into a 3 1/8" mounting hole. .
These fit-ups are made in California factory.
These products fit into a 3 1/8" hole size.