Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Didn't work at all

I'm tiling my bathroom and thought this would be helpful. The drill bit is very cheap metal wouldn't make the least dent in the tile I was using. In fact, I flattened the end of the drill bit trying. And the saw blade wouldn't cut the tile either. Maybe it needs ...what ...softer tile? Good grief - this is just junk.