The DWD520K 1/2 inch VSR pistol grip hammer drill kit can be set to either drill or hammerdrill mode for applying to masonry, wood or steel. Includes a 2-speed range for high speed drilling or torqueing. Soft grip handle and two-finger trigger increases user's comfort and control. 10.0 Amp 1/2 in. Keyed chuck 0-1,200 / 0-3,500 RPM 0-56,000 BPM