Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cheap price - cheap build

At about half of Dremel's price for their rechargeable unit, you would think this was a good deal. However, you will need to buy AA batteries (not included). If you don't use it a lot, then that's not much of a problem.Build wise, it feels cheaper, and will probably break if dropped. I am using it with a long diamond ream, and it oscillates pretty bad at the tip, which makes it a little difficult to use. I have to put the ream inside the small hole(1/8"), that I am trying to clean, before turning it on, because the tip of the ream oscillates about 1/4" of an inch.If you want to just clean golf balls, which is what they sell this as, then it should be fine. If you also want to use it for any other kind of detail work, go with their better units.