DeWalt DCD1007WW1 Hammer Drill 20V DC, Premium, 1 2 in Chuck, 1 2 in Concrete Capacity, 3 Speeds, 1,530 in lb 2352 20 Grit 220 Backing Material Latex Waterproof Grit 220 Backing Material Latex Waterproof Paper Grade Very Fine Series Blue Bak T414 Backing Weight B Abrasive Material Silicon Carbide Color Gray Abrasive Type Coated Resistance Properties Water Coating Coverage Open Engine Loncin 5 Take on a wide range of demanding applications with the 20V MAX* XR Brushless 1 2 in Our most powerful 20V MAX* hammer drill is equipped with the ANTI ROTATION System that shuts the tool down if rotational motion is excessive and delivers up to 275 holes per charge