It?s all about control with Dahle?s Personal Rotary Pencil Sharpener. With the twist of a dial you can set the degree of sharpness for your pencil. Whether you need a fine tip or a blunt edged point, Dahle?s Automatic Cutting System (with precision cutting blades made of Solingen Steel) sharpens to your personal preference then spins freely to prevent over sharpening.The sharpener not only gives you the optimal results you desire but also saves lead. It can be easily cleaned to remove any waxy buildup.The Personal Rotary Sharpener accommodates standard graphite and oversized artist pencils. A mounting clamp is included but not necessary for portable sharpening.