The DEWALT DCF887 18V XR BRUSHLESS IMPACT DRIVER is an awesome impact driver for driving in most screws. In this review I drive in some large screws that would be impossible for most other impact drivers. This machine has a maximum torque of 205NM and can easily drive in huge screws. The three modes of operation mean that you can even drive in tiny screws if you use the driver in mode 1. The three LED lights at the front illuminate the end of the bit really well meaning that you can use it in dark places, such as under kitchen units without the need for a torch.