Norton Screen-Bak Durite Q421 Screen Sheets are engineered for maximum flexing and fast cutting for wet or dry applications. These sheets have a longer life than paper sheets. They can be cut to size without shedding and are packed in a protective dispenser to eliminate waste and damage. Typical applications include scouring and light deburring, scale and rust removal, blending machine tool marks, fine sanding and polishing, or sanding drywall. Cloth sheets are typically used hand sanding or jitterbug sanding.