Voltage : 20 Collet Size : 1/4 In. Battery Type : Lithium-Ion Motor Type : Brushless Maximum Speed : 25,000 RPM Width (In.) : 4 Height (In.) : 3.9 Length (In.) : 17 Weight (Lb.) : 3.4 Batteries Included : No Charger Included : No Case Included : No Warranty : 3 Year Corded/Cordless : Cordless Battery Platform : DEWALT 20V MAX