Wet coring in reinforced concrete and dry coring in concrete block. High motor performance and rugged two-speed gearing for optimum drilling speed. Compact design and ligh weight for easy handling. Drills clean, accurate holes. Slip clutch, overload protection and safety switch for maxium protection. BI chuck for tool-free bit changes. Includes tool, BI chuck and water swivel, dust removal adaptor and 5/8-11 (BT) adapter for slotted dry bits in an impact resistant plastic tool box.