Seriously, I don't think I've ever used a worse pencil sharpener. It does NOT auto-stop as advertised - I can stick in a brand new pencil and end up with a one inch nub a minute later. Sometimes the pencil tips just break off after inserting, leaving them worse off than they were before. Also I don't like that it's not sturdy enough to use with one hand. If my other (non-sharpening) hand doesn't hold it in place the sharpener will spin instead of sharpening. This product is absolutely horrible.