High-power, low weight: handy cordless impact wrench with 1/2" male square and high torque of 550 Nm Perfect for woodworking, industrial assembly, changing tires, and more Powerful Brushless motor for greatest efficiency and long battery pack runtime Automatic Power Shift (APS): screws/nuts will not fall down when unscrewed, and no overtightening when screw fitting in APS mode Overload protection: protects the motor from overheating Twelve speed/torque levels for a wide range of applications Integrated LED work light with afterglow function for optimal brightness in the work area Maximum service life thanks to a cast aluminium gear housing and robust striking mechanism for high loads Handy belt hook, can be fixed either on the right or left side Many brands, one battery pack system: This product can be combined with all 18V battery packs and chargers of the CAS brands: www.cordless-alliance-systems.com Characteristics Battery voltage18 V Max. screw sizeM24 Max. no-load speed2800 rpm Maximum impact rate3600 bpm Maximum torque550 Nm / 406 ft. lbs Max. loosening torque840 Nm / 620 ft. lbs Speed/torque levels12 Tool holderMale square 1/2" (12.70 mm) Weight without battery pack1.4 kg / 3.1 lbs Vibration Impact screwdriving18.2 m/s² Uncertainty of measurement K1.5 m/s² Noise emission Sound pressure level98 dB(A) Sound power level (LwA)106 dB(A) Uncertainty of measurement K5 dB(A)