Patty Both Retro Camera Pencil Sharpener Black Adjustable Diameter Range: 7-12mm, Palm Mini Size: 65 x 75 x 120mm, Manual Operation, ABS plastic parts are strong, durable Anti slip bottom, stable to place on the desk when it is scrolling. Each blade is good for 5000 uses and can be easily replaced or cleaned Feature of detachable, counterclockwise and you can get out the pencil which is cracked. The compact, quiet, durable design makes this the ideal sharpener for classroom office and home use You do not need to hold the pencil, you can use one hand to hold the pencil sharpener and one hand to crank,and producing a perfect point in seconds