BEWARE of lots of metal shavings!!!!! Good thing I opened the package on a bathroom counter, so it was easy to see dozens of metal shavings left over from the manufacturing process fall out like crazy. These sharp shards, left over from cutting the female threads in each end of the metal tubular feet, should have been vacuumed out of these tubes before placing the four feet into the packaging.ALSO, the low-profile metal \receivers\" that are epoxied onto the glass (like how rear-view mirrors are glued onto windshields) are NOT located consistently side-to-side or front-to-back from the edges of the glass. Sheesh! How hard could it have been to have a jig to keep the dimensions uniform. (Yes