SAIT Open Coated Handy Roll, Handy Utility, Series: DA-F, 1 in Roll Width, 50 yd Roll Length, 320 Grit, Very Fine Grade, Aluminum Oxide Abrasive, Cloth Backing, Red, Applicable Materials: Ferrous and Non-Ferrous Metals Iron, Aluminum, Copper, Normal and High Tensile Steel, Wood and Fiberglass, J-Weight Backing