This Teachables Electric Pencil Sharpener is the ultimate in pencil sharpening and is a must in every classroom. It sharpens thin and thick pencils up to 11mm in diameter and you can adjust the tip shape to very sharp and pointed to rounded in shape all in one hole. Just select the desired pencil width sized hole with a simple twist and insert your pencil, it will not over sharpen. The sharpener has a large reservoir for the pencil shavings and the entire sharpener can be removed from the base to transport to the garbage for emptying, similar to an electric jug. The blades provide a superior cutting mechanism. The cutting mechanism can be replaced without tools, easily and quickly. There are rubber feet to help prevent slipping and provide stability.