The Dewalt DCH133 is a powerful hammer drill designed for heavy-duty work. With a brushless motor and 20V voltage, this bare tool is perfect for those who already have Dewalt batteries and chargers. The drill features a keyless chuck size of 1 inch, allowing for easy and quick bit changes. Whether you're a professional contractor or a DIY enthusiast, the Dewalt DCH133 hammer drill is an excellent addition to your toolkit.