Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor quality, doesn't last

I had a similar problem as one of the other reviewers. Within a couple months of mild use, the ball bearing that holds the bit in place fell out. Losing that ball bearing essentially makes the tool useless because the bits fall out so easily that I can't use the tool in any angle other than by holding the tool completely upright. It's just not practical. Stay away, and find a tool with better quality.