These powerful, shock-free, wet diamond core drill can be used hand-held or rig mounted. It is designed for drilling holes up to 4" or 5" in diameter in reinforced concrete, brick, block and stone. The gear box provides for high torque and efficient drilling. Electronic torque limitation and speed control guarantee constant RPM even under load.  Features a slip clutch, thermal overload switch, electronic torque limitation and speed control  Has a built-in water swivel and ground fault interrupter.  Choose from two models 2-speed (top picture) or 3-speed (bottom picture).  Furnished with a metal carrying case.  Core Bits Not Included (See "Drill Bits" in our Cutting Tools Section).