SAIT® AO-X Blue Line™ Coated Abrasive Belt, Portable Semi-Friable, 24 in Belt Length, 3 in Belt Width, 24 Grit, Coarse Grade, Aluminum Oxide Abrasive, Cotton Backing, Open Coat, Applicable Materials: Softwood, Non-Ferrous Metals, Aluminum, Leather and Rubber, X-Weight Backing SAIT® AO-X Blue Line™ 58170 Portable Semi-Friable Coated Abrasive Belt, 3 in W x 24 in L, 24 Grit, Coarse Grade, Aluminum Oxide Abrasive, Cotton Backing