Martin Yale 724 Premier StackCut Heavy-Duty Paper Trimmer, Table Size 18-1/2" x 24", Permanent 1/2" Grid and Dual English and Metric Rulers, Ergonomic Soft-grip Handle Heavy-duty 3/4 Inches thick wood base Through-hardened steel blade, precision-angled to cut stacks of up to 30 sheets Accurately cuts paper, matte board, cardboard, film, tissue, and textiles Permanent 1/2 Inches grid and dual English and metric rulers Ergonomic soft-grip handle Safety features include finger guard, blade latch lock and spring to prevent blade from falling. Slices through big stacks with ease - perfect for busy schools and offices. Fully hardened self-sharpening high-carbon steel blade is precision angled to cut stacks up to 30 sheets. Clamp securely holds paper to prevent shifting or tearing. Also cuts mat board, cardboard, film, tissue and textiles.