This Staedtler 512F pencil sharpener has a double metal sharpener and is equipped with a handy collection tray. The tray and the shut-off valve prevent shavings from swinging around. The double sharpening blades are suitable for standard graphite pencils up to 8.2 mm and thick graphite and colored pencils up to 10.2 mm. Use this pencil sharpener with a 30°sharpening angle to draw soft, wider lines.