Premier W30 GreenBoard Wood Series Paper Trimmer, 30" Cutting Length, 20 Sheets Capacity, Heavy-duty 3/4" Thick Wood Base, Ergonomic Soft-grip Handle Heavy-duty 3/4 Inches thick wood base Through-hardened steel blades cuts up to 20 sheets at once Accurately cuts paper, matte board, cardboard, film, tissue, and textiles Permanent 1/2 Inches grid and dual English and metric rulers Patented automatic blade latch locks with every cutting motion