The QEP 5/8-inch Heavy Duty Mixing Drill features a 0-600 RPM variable speed dial that minimizes air bubbles and splash. It is ideal for mixing thinset, grout and mortar, as well as standard drilling functions. The diecast aluminum housing protects the internal components from everyday wear and tear. The high-torque, double reduction gears provide increased torque for mixing the thickest mortars. Side handles provide comfort and maximum mixing leverage, while the D-handle rotates a full 360 for greater control during all mixing and drilling applications.