Ningbo Instruments Mechanics Torque Multiplier is a mechanic torque tool to tight, loose, dismantle nuts, screws, bolts. It is very convenient, with high output torque, widely used in many repair, maintenance work, especially helpful in flammable and combustible places such as power plant, oil and gas, mining places where fire is strictly restricted. Moreover, it does not require additional power supply such as electricity, hydraulic, pneumatic, so make it very easy to use.