Features ---Heat Treated Alloy Steel Construction. ---With the big trans-ratio, it will allow more output torque while using less force. ---The maximum safety output torque ≥ 3200N.M, which is equivalent to 320KG F.M ---Maximum output torque required for normal disassembly (tightening) nut ≥ 3200N.M ---With the big trans-ratio, it will allow more output torque while using less force. ---It takes about 6 minutes to disassemble (tighten) a tire. ---3 Sockets in each set: 17mm, 19mm, 21mm ---Carrying case with handle for storage How to use it: 1. Install the wind gun sleeve into the square end of the shank and the other end of the rocker. 2. The wind gun sleeve is placed on the nut to be disassembled (fastened), pay attention to the elastic direction, and shake the rocker to make the handle against the side of the other bolt. 3.