Adaptation Diversification of 2 Modes. The hammer drill and drill modes provide versatility for drilling into the metal, wood, concrete, brick, block and other masonry materials. Ajustable speed, which can control the speed from 0-3000 RPM. Forward and Reverse ability for easy adjustment according to tasks. The anti-slip assisting handle can be rotated by 360° for comfortable drilling. Heavy-Duty keyed Chuck – To accept large diameter bits for heavy duty work. Depth Gauge assists in making drilling more precise. The lock-on button and are perfect for long use applications. Working comfort, perfect balance and latest handle design gives the Hammer Drill added control. Impact drill’s very low weight and compact, ergonomic design make this tool exceptionally comfortable and easy to handle.