Review (1/5): Worthless. Distorted and broken within a month use.
Obviously the designer did not take into consideration of the difference in the expansion rate of the wood part and the teeth. I bought this just a month ago for my wife but today when I saw it, the inner portion has already broken into 4 pieces and the wooden part is twisted and distorted. It is 2 days past eligible return date when I discovered the problem. Buyer beware!!!