This pencil sharpener has a sturdy construction, made from metal and using a cooling mechanism inside to keep the motor cool and preventing overheating. With the large storage capacity in this sharpener, many pencils can be sharpened in a short period of time before the shavings must be removed from the storage area. That makes this sharpener perfect for school rooms, art studios and offices in which many people are using pencils. This sharpener has a variety of pencil guides that can be slid into place to accommodate different pencil types of various sizes. You won't have to worry about over-sharpening a pencil with the pencil-saver feature. Keep any pencil sharp with the two steel cutters inside that create a sharp cut for a precise point. Keep this sharpener on any table securely with the non-skid feet on the bottom of the unit. This UL-listen unit does not draw any electricity when it's not in use. A two-year warranty ensures excellent construction and longevity.