The Derwent Super Point manual pencil sharpener has a helical blade, ensuring superior sharpening for super fine pencil points. Sharpen pencils um to 8mm in diameter. The self-feeding mechanism in the extendable front plate will stop each pencils when it has achieved a sharp point. The Super Point Manual Desk Sharpener includes a desk clamp and a clear sliding tray for collecting shavings. Say goodbye to batteries and still achieve a superior point.