Dewalt DC920KA Heavy-Duty XRP 18V Cordless Drill/Driver Need the Bare Tool Voltage18 VMax Power510 UWO# of Speed Settings3Max RPM0-450/0-1500/0-2000Clutch Settings22Chuck Size1/2 "Chuck Typemetal single sleeve axial lockingTool Weight6.0 lbsIncludes:1 hour charger(2) 18V XRP? batteries360? side handleheavy-duty kit boxFeatures:DEWALT built high power high efficiency motor delivers maximum performance in all drilling and fastening applicationsXRP? extended run-time batteries provide long run-time & battery lifePatented 3-speed all-metal transmission matches the speed to the application for optimal performanceHeavy-Duty 1/2" axial locking chuck locks the sleeve to prevent bits from slipping and falling outPreferred ergonomics provides optimal balance size and weight