Instruct: Classify the given review into positive or negative sentiment.
Query: Terrible design and quality

5 seconds after removing these from the box I have already decided they're never going on my coffee table. First, the "wood" holder is badly chipped and there are bits of black paint all over the coasters. But worse, the coasters themselves (which are tools meant to protect the finish of a table, if I'm not mistaken) have a metal backing with a fairly sharp edge underneath where the photo goes. It doesn't take a genius to recognize that within a few days of regular use that metal edge would cause all sorts of damage to a table much worse than a ring of moisture ever would, despite the tiny rubber feet on the bottom. As a test I found that I was easily able to shave the finish off a corner of an old table with no effort at all. Glad I only paid $10 since I'm sure I'll never get my money back.