I just absolutely love these things. No more knocking your beer/water over, no more drinks vibrating off of the amps. Perfect for medium sized drinks, including a 500ml beer can or 330ml fizzy drink. After I bought one the other guitarist and the keyboard player both bought one too. If you haven't got one of these or something similar you don't realise how life changing these things are for a gigging band. Can fit a vertical or horizontal stand. Just excellent.