I bought a refurbished version and so far so good. He threaded a 2 1/2" screw through 2 sheets of 3/4" plywood. It was difficult to turn the screw. I like the small design and the variable speed. The two downsides I see are that you can't remove the battery and it takes a little longer to charge. It's also great for small projects around the house. I would not recommend it for continuous use.