Impact Wrenches, Cordless, 1 in Square Drive, Square Drive Configuration, 1,800 ft-lb Max Torque, Bare Tool, Voltage 18V DC, Series M18 FUEL, Lithium-Ion Cordless Tool Battery, Brushless Motor Yes, Anvil Impact Action Mechanical, Maximum Blows per Minute 2450, Maximum No Load RPM 1650, Cordless, Pistol Grip Handle, 10-29/32 Inch Tool Length, 10.5 lb Tool Weight, Clutch Style Impact, Battery Included No; Battery Pack Replacement Manufacturer Number 49-11-1880