The JET J-4103 Square Wheel Belt grinder offers fast, efficient grinding and finishing all in one machine. Serrated contact wheel removes heavy stock, cleans up a weld or snags a casting. The J-4103 grinds and refinishes cylindrical shapes and puts a satin finish on steel, iron or aluminum, and grind difficult to reach areas with the 3in. x 2in. or 1 1/2in. x 2in. diameter contact wheels.