2" X 72" Metalworking abrasive sanding belts. 36 grit. Sold in packs of 6. Aluminum Oxide (A/O). Closed coat, heavy X weight cloth backing. High quality and long lasting industrial abrasive sanding belts work great on non ferrous and ferrous metalworking applications, (including aluminum, steel and stainless). X-wgt material provides stiff backing for working with dense metals. Resin over resin bonding. Bi-directional tape joint. Dry applications. Assembled in USA.