These are beautiful and exactly what I need, but even with additional screws into the wall, the shelf that holds the wine is still not completely stable.  I have ordered pipe supports that will add an industrial appearance to it as well as additional support to the wine shelf.  The shelf that holds the glasses is fine due to how it is built.  Also, the wine shelve isn’t very deep, only holding certain bottles of wine - ones that have longer necks and fuller bottoms, such as Chardonnay.  I still love the way it looks, but it needs some improvements to work.