This composite impact wrench by RED ROOSTER has an excellent weight/power ratio. The RR-18N T is especially developed for the tireshop applications. The Twin Hammer impact mechanism gives high energy levels per impact en thus suitable for heavy duty applications. The energy is directly transmmitted to the anvil for maximum power and low maintenance. The tool is limiting (*) the tightening torque for wheel nut applications, so overtightening is history! Full power available in loosening direction. Always use the torque wrench to check the torque!