The JET Square Wheel Grinder is a belt grinder that uses a flat platen and idler wheels at each end to achieve a long, flat grinding surface. This innovative design permits grinding on the front wheel, which is square to the work and not crowned. The JET Square Wheel Grinder will grind, deburr and chamfer with equal proficiency both internal/external on parts. large or small. We have added a dust port to help keep your shop clean and sparks and debris away from the operator.