Brushless Motor & Axial Fan Design Delivers maximum efficiency at 350 CFM and 100 MPH Boost Mode Clear heavy debris with the push of a button Variable Speed Trigger Choose between more power or more runtime 1/2in. Cordless drill/driver with high performance motor produces 280 unit watts out for completing a variety of applications 2speed gearbox with speeds of 0350/01, 500 for speed of fastening 1/2" Keyless chuck for fast and easy bit changes