This new and improved Derwent Twin Hole Pencil Sharpener includes a dual size metal sharpener with sharp, effective carbon steel blades. Long lasting and high quality, these blades produce smooth, consistent results and sharp points every time. It is ergonomically designed so is comfortable to hold and has a modern tinted reservoir with a flip top cap. This dual size sharpener will take pencils up to sizes 8.25mm and 11.5mm. Includes a high quality manual metal sharpener. Blades are long lasting & offer superb performance. Delivers smooth, sharp pencil points time after time. Suitable for pencil sizes up to 8.25mm and 11.5mm. Compatible with most Derwent Pencils, apart from Charcoal and Pastel Pencils Also works with other brands. Sharpenings are held in a handy waste container for easy disposal.