●Zirconia alumina is the standard for aggressive cutting, grinding and shaping of metals & very hard wood ●Best for heavy grinding, deburring and weld removal of ferrous metal (Steel, Stainless Steel, Cast Iron, Carbon Steel). Also great for non ferrous metals (aluminum, titanium, brass, Bronze, copper). ●Premium top coat grinding aid reduces heat and allows for a cooler running abrasive. ●Ultra strong and Precision built bi-directional tape joint. Belts can be run in either direction. ●We are the manufacturer! Factory Direct and built in USA by Red Label Abrasives. Guaranteed or Money Back.