This sharpener is perfect for high-volume use. The hardened steel alloy blades equipped with the Pencil Saver? feature save time and money by preventing over-sharpening. X-ACTO? steel cutters. Thermal overload shuts off motor before overheating. Auto-Reset? when cool. Sharpener Type: Desktop; Power Type: Electric; Cutter Material(s): X-ACTO? Steel; Color(s): Black.