I concur with the first review of this product. It broke on my very first attempt at reaming a potato pearl. Not only did it not ream a larger hole, but the metal part got stuck about 2mm inside the pearl. When I tried to bring it back out, the metal reamer separated from the handle and remained inside the pearl. Beadaholique states that it is a delicate tool and must be handled with care. No doubt it's delicate because it can't even ream a single pearl without breaking. I now use the handle of the tool a mandrel.