X-Acto 1827 Extra Cutter For High-Volume Commercial Electric Pencil Sharpener, 1 Unit Ideal for business or classroom use, the X-Acto Extra Cutter For High-Volume Commercial Electric Pencil Sharpeners is an ideal replacement cutter This cutter includes a thermal overload feature that shuts off the motor before overheating Its all-steel cutter ensures a perfect point and prevents over sharpening Other features include a three-prong plug (power supply) and a UL/cUL listed manufacturers' 2-year limited warranty