This three-speed hand held core drill machine combines a strong all aluminum housing, 3-speed oil bath gear box, slip clutch, built-in leveling bubble, water swivel & overload signal and GFCI built into the cord. With load speeds of 600, 1,300, 2,800 rpms, this motor will drill small holes lightning-quick. Lightweight at only 16 lbs., this is the best core drill in its class. Ideal for drilling holes in floors, walls, ceilings and for all concrete anchoring systems. Fast and efficient drilling of reinforced concrete, concrete, brick, block and stone.