I wanted a way to transport a saw on my trailer,, I cut some rubber matting,
There are four pieces, front, back, and two "spacers" , all rubber.
It was then bolted to the end of the trailer.
I use it with my Milwaukee electric, and my Stihl 029Super,,
The bar and chain are completely encased in rubber, with an open bottom.
Harbor Freight sells a drill powered gasket cutter set.
That gasket cutter is the only way to make holes in thick rubber,,
it will cut a "plug" of rubber out, leaving a perfect hole.
I did add a steel chain across the two top bolts, to make sure the saw did not break through the rubber, and hit the ground.
That trailer is 70 years old this year,,,,