General description 3M Xtract Cubitron II Paper Disc 732U is designed for efficient sanding and finishing applications. This product features a unique triangular-shaped grain that cuts faster and lasts longer than conventional abrasives, making it ideal for a variety of surfaces. The 320+ grit provides a fine finish, suitable for final sanding stages. Technical specifications Diameter: 152 mm Grit: 320+ Weight: C-Weight Pack size: 50 discs Other information