Premium high performance zirconia alumina grain blend ensures fast, cool cutting and extra-long life on steel and stainless steelThe 5/8-11 “Quick Change” arbor increases productivity by reducing time spent on wheel change outsType 27 wheel shape offers the most contact area to create a smooth, professional finish quickly and easilyTrimmable backing pad for extended disc lifeOptimal performance when operated at an angle between 0° and 15°