Where space is at a premium, this compact design desktop pencil sharpener is a great choice. Hardened steel helical cutting blades deliver a clean, sharp point every time. The auto stop feature lets you know when the pencil is sharpened, thus preserving pencil life. The thermal overload shut-off prevents motor damage and resets once the motor has sufficiently cooled. If the receptacle tray is removed, a built-in safety feature stops the motor.