I used these with a Bosch jig saw to cut laminate counters after they were installed. They were the post form type, and it made the whole job much easier cutting out sink holes from the top (no chips at all). Avoids flipping over a counter after cutting a large sink hole in the middle. Also it's easier to mark out on the top side. I used 3/4 plywood under the laminate counter, so the overall thickness where the holes were cut was 1 -1/2 inches.