Heavy-duty 3/4" thick wood base. Fully-hardened high-carbon steel blades cut up to 20 sheets at once. Accurately cuts paper, matte board, cardboard, film, tissue, and textiles. Permanent 1/2" grid and dual English and metric rulers ensure proper alignment. Patented automatic blade latch locks with every cutting motion. Finger guard protects entire blade length. Torsion spring prevents blade from accidentally falling during operation. Non-skid rubber feet. Limited lifetime warranty on blades, one year on other components.