For high speed sanding and finishing of flat surfaces on wood, plastic, and fiberglass, grinding and finishing of all metals, blending welds and abrasive planing of wood.Highlights :Size: 4" x 24"Grit: 120Aluminum OxideHandy Packs While we aim to supply accurate product information, it is sourced by manufacturers, suppliers and marketplace sellers, and has not been provided by Overstock.