Heavy-Duty Guillotine Paper Trimmer, Wood Base, 12""x15, Sold as 1 Each Heavy-duty wood base paper trimmer with self-sharpening steel blade, blade-lock safety latch, safety guard, rulers and both English and metric grids. Built to stand up to the frequent use in busy environments. X-ACTO? hardened steel blade with the Perpetual Edge Self-Sharpening System?. Features blade-lock safety latch and safety guard. Durable 3/4"" thick base.