Cross-cut shredder up to 20 sheets(Letter Size, 20lb) at a single pass, Shreds paper into tiny particles measuring 5/32 x 1-37/64 inches (4 x 40mm); Shreds credit cards, CDs, DVDs, and Staples as well Continuous running time up to 20 minutes without stopping with Advanced Cooling System and patented Cutting Technology 60 dB low noise level will give you a quiet and smooth shredding experience and 4 Casters for convenience moving to anywhere you want