The Super Pro 6 heavy duty electric pencil sharpener is the mother of all pencil sharpeners. From function to form, each element was engineered for high use commercial environments. At the heart of the sharpener is an extreme QuietSharp motor for heavy duty use. The motor is fan-cooled so it won't overheat and shut down. A thermal overload protection also ensures stall-free performance. For super fast sharpening, the XHC² Cutter Technology is 75% faster with 12x longer life. The Tip Saver Technology prevents over sharpening, extending pencil life. A MagnaSafe tamper proof switch activates when the shavings tray is removed. This prevents operation for safety during cleaning. On the front of this heavy duty pencil sharpener you'll find the easy spin, 6-size pencil selector dial. This dial supports many pencil sizes, from standard to jumbo models! An oversized die cast metal base and added suction cup feet provide the utmost stability. This sharpener can handle the toughest jobs you through at it!