This drill mixer is a heavy duty double gear reduction for maximum torque and improved performance, Reversible, variable speed control to match speed to application, Up to 0-600 RPM maximum speed, Three position side handle for comfort and control Durable, all steel 1/2 in. chuck 360 degree spade handle for added comfort and control in high torque applications.

Tested to mix mortar and concrete.  Lots of power and a resonable price point!