Cabinet saws have an easily replaceable insert around the blade in the table top allowing the use of zero-clearance inserts, which greatly reduce tear out on the bottom of the workpiece. It is common for this type of saw to be equipped with a table extension that increases ripping capacity for sheet goods to 50". These saws are characterized by a cast iron top on a full-length steel base, generally square in section, with radiused corners. Two 3/4" wide miter slots (1" wide on the largest saws) are located parallel to the blade, one to the left of the blade and one to the right.