DeWalt D21570K 1300W 127mm Diamond Core Drill 110V. With its powerful 1300W motor the D21570 can drill up to 127mm in masonry with diamond Core bits. Features a 2 speed gearbox for increased versatility, E-Clutch to protect users from bind-up and a heavy duty 16mm steel chuck for enhanced bit retention. Electronics provide E-CLUTCH, power-up and overload protection. Two speed gearbox for increased versatility when drilling in wood, metal and concrete with standard drill bits. Heavy duty 16mm steel chuck allows quick bit change whilst offering excellent bit retention. New motor gives improved performance in applications with dry Core bits up to 127mmn in bricks or soft masonry. Innovative mode selection collar allows intuitive control for optimal performance. Electro-mechanical clutch increases user control and protection.