The DEWALT D21570K Dry Diamond Drill has a new motor which gives improved performance in applications with dry core bits up to 127mmn in bricks or soft masonry The electronics provide e-clutch power-up and overload protection and the two speed gearbox for increased versatility when drilling in wood metal and concrete with standard drill bits The electro-Mechanical clutch increases user control and protection and the heavy-duty 16mm steel chuck allows quick bit change whilst offering excellent bit retention It has a innovative mode selection collar which allows intuitive control for optimal performance Standard Equipment Multi-Position side handle Depth Stop and Heavy-duty Carrying Case Specification Chuck 16mm Keyed Spindle Thread 12in x 20 UNF Input Power 1300 Watt Power Output 680 Watt No Load Speed 0-12500-3500min Capacity Core BrickMaonry 127mm Collar Diameter 43mm Length 380mm Height 215mm Weight 30kg