This product is built to withstand extremely heavy use and is great for anything you need an angle drill for. I have a 28v rock drill and a 28v impact wrench and they all work exactly as described by the manufacturer. For the price, 28 volt devices are quite expensive. The fact that they are so expensive and only have 1 battery is the only reason I gave them 4 stars. If this rating were based on quality alone, it would definitely get a 5.