Let me start by saying this is by far the best glass piece I’ve ever owned. I had a crack where the bowl meets the downsteam , I sent a email that was quickly answered, and they sent me a new piece out to replace the cracked piece. It is really nice to have a company stand behind there products and care about there customers, rarely happens these days. I would recommend Grav over any glass on the market. Very satisfied with my experience and my piece.