The 12V Impact Wrench is designed to loosen and tighten vehicle lug nuts for tires. Keep it in your trunk for roadside emergencies. Simply plug it into your 12V DC vehicle power to quickly and easily change your tires. It uses low power and does not require alligator clamps to the battery to use. The 12v Impact Wrench is packed in a convenient plastic carrying case. Also includes 2 double socket wrenches, 17/19 mm and 21/23 mm, plus 2 spare fuses. The impact wrench features a bubble level on the top, a forward/reverse switch, LED power indicator and 11.4 feet power cord, Amperage draw - 8 ampere, no load speed - 5000 RPM maximum torque - 271 feet pounds, sound pressure level - 83 decibel, acoustic power level -94 decibel, square retainer diameter – 0.5 inch.