Power Torque, Impact-Resistant Aluminum Gear Housing, Ball Bearing Motor And Forward/Reverse Function, Variable Speed Trigger, 1/2In To 1/4In Quick Release Bits Adaptor. Drive: 1/2"; Voltage: 110-120V, 50-60Hz; Power Consumption: 1010W/ 5 Amps; B.P.M.: 4400; No-Load Speed: 0-2200 Rpm; Torque: 450 N.M(332 Ft-Lbs); Power Cord: 16 Awg; 77 In-Length; Body Overall Size: 12 X9 X3.5 In.; Net Weight: 7 Lbs; Shipping Weight: 12 Lbs; Shipping Size: 15 X13 X5 In.; Include: 4 Sockets: 11/16; 3/4; 13/16; 7/8 In.; 1 Extension Bar 5 In. ; 1 Bits Adaptor Quick Release; 2 Carbon Brushes; 1 Plastic Carry Case ; 1 User Manual.