PSA Sanding Disc Roll, Abrasive Type Coated, Abrasive Material Aluminum Oxide, Backing Material Paper, Backing Weight B, Coating Coverage Open, Grit 120, Overall Diameter 3 1/2 in, Product Type PSA Disc Roll, Series A275OP, Resistance Properties Load, Number of Vacuum Holes Non-Vacuum, Grade Medium, Package Quantity 4