The Worx Nitro WX102L 20V Power Share ½ inches cordless drill/driver with brushless motor is built to last, with all-metal gears for performance you can count on during even the most demanding jobs, and an all-metal heavy-duty 1/2 inche ratcheting chuck which practically eliminates bit slippage. 2-speed gearing and a variable speed trigger allow the user to find the perfect rotation from 0-600 RPM or 0-2000 RPM. Low speed provides more torque, and is meant for tougher jobs and tougher materials. High speed gets the job done quicker but offers less torque. The 20+1 clutch allows for further fine-tuning so you can find just the right setting for each application, with 531 in-lb of maximum torque available from this drill/driver.