Because every fastener is designed to be loaded with a certain amount of tension, nuts and bolts that are too tight or too loose could cause some big problems.Too tight and the fastener or the fastened part might be damaged or distorted.
 

Electric torque wrenches are ideal for almost every situation, Just need electricity.

Hanpu Torque adjustable wrenches have the highest power-to-weight ratio compared to any other brand torque wrenches. Hanpu wrenches are manufactured from high-quality components which make these electric torque wrenches lightweight but still very robust.