5-Inch by 8 1200 Grit Premium Plus Hole Hook and Loop C-Weight Non-Loading Stearated Heat Treated Aluminum Oxide Sanding Discs. An excellent all-purpose disc with a fast cut on a durable yet flexible C-weight latex impregnated backing paper. Can be used for raw wood, paints, primers and finishes, composites, fiberglass and metal. Sungold Abrasives have been manufacturing coated abrasive products for over 37 years. Can be used for sanding of wood, metal, composites, finishes, paint.