This item is everything I wanted and more!   It is constructed of high quality, thick glass materials with a triple beveled edge.  So far, the turning mechanism is as smooth as silk.   I considered having a custom wood equivalent of this size made but then found this item in glass and decided to give it a try.  Although it does show finger prints (only downside so far), it allows the beauty of my new custom 82 inch round dining table shine through.  

***Beware the item is heavy (over 80 lbs) as shipped.  The shipper damaged the first one ordered, then Wayfair was out of stock and could not ship a replacement until stock was replenished, six (ish) weeks later.   That was a bummer but well worth the wait.