The Ryobi SDS-PLUS Rotary Hammer Drill features a powerful 6.5 Amp motor for high performance. Quickly change between applications with the tri-mode selector, which allows the user to choose between drill, hammer, and hammer drill modes. The SDS-PLUS chuck provides strong bit retention, tool-free bit changes, and durability. Match the drill speed to the application with the variable speed trigger, and set the lock-on trigger for continuous use. The internal safety clutch minimizes high torque reactions if the bit jams. See below for more information. Hammer drill mode: for drilling up to 1 in. holes in masonry and concrete Drill mode: for drilling holes in wood, plastic, and metal Hammer mode: for chiseling masonry and tile Forward/reverse switch located above trigger for quick and easy access Integrated speed dial on trigger for maximum RPM control