The 3M 3/4" x 18" 36 Grit Coated Zirconia Alumina Very Coarse Abrasive Belt is engineered for efficient metal sanding and finishing tasks. It utilizes an alumina zirconia mineral, enhanced with a grinding aid, to offer increased cutting power compared to conventional aluminum oxide options. Its durability is bolstered by a heavyweight cloth backing, designed to withstand the demands of high-production environments. The tough alumina zirconia abrasive mineral is adept at quick material removal and caters to a broad range of metal substrates.