We ordered this as a replacement part on a very beautiful sink that we bought several years ago.  We required the plumbing part only.  We received the order a day later than promised.  This was because of 'the storm of the century' that hit us on the weekend of April 13th so the delay was expected.  We received our order one day late and the required parts were installed without any difficulty.  We used the waterfall glass circle from our original sink with the new plumbing parts and it works perfectly and looks gorgeous.  Very happy with the result.  Certainly a five star product.