3M 577F cloth abrasive belts use alumina zirconia abrasive grain for increased cutting efficiency compared with aluminum oxide belts and are backed with a heavy, water‑resistant YF‑weight polyester backing engineered to withstand high‑pressure applications and edge work. These belts support both wet and dry operations and deliver long life in industrial sanding and finishing applications. Model: 577F. UPC: 051111686690. Pack configuration shown: 50 belts per inner pack, 200 belts per case. Typical carton/handling dimensions reported on marketplace listings: 12 x 12 x 7 inches; item weight listed on marketplace: 6.19 pounds. ProductDatabase records also include product-level physical attributes (ItemProductHeight: 1.0000, ItemProductWidth: 1.0000, ItemProductLength: 1.0000, ItemProductWeight: 0.0250). Manufacturer: 3M COMPANY.