I was honestly skeptical of the of the sharpener. It looks like it would work good, but I wasn't sure about the mechanism that pulls the pencil into the sharpener. In reality it works extremely well. You can sharpen the pencil and it will basically stop when the pencil is sharp.
The sharpener came packed very well.
Here you can see the sharpener and the clamp the you can use to clamp it to a shelf.