The OffiTrim Plus 18" Guillotine Cutter by Akiles easily cuts through a 12 sheet stack of 20 lb. bond. The cutter uses an arm with a blade that is manually pulled down to cut through the paper. This 15" model features a Magnetic Paper Stopper for cutting evenly every time. The blade is made of stainless hardened steel, and has a convex edge for a more efficient cut and an anti-rust treatment. The 15" OffiTrim Plus also features a Safety Control, which locks the knife closed when it is not being operated. The cutter also uses a Pressing Bar to hold the paper down firmly while you pull the blade down to cut the paper. The Cutting Table has been coated with an anti-rust treatment and features horizontal and vertical ruler-guides for a more accurate cut.