Instruction: The spring balancer can adjust the tension through the knob, counterclockwise to increase the tension, and clockwise to reduce the tension Advantage: The balancer adopts a solid metal structure with strong load-bearing capacity. It can effectively balance the weight of the tool, reduce the burden on the operator, maintain the sustainability of repetitive work, and improve work efficiency Application: Retractable spring balancer are designed to support and balance tools or equipment, making it easier for users to operate them without feeling their full weight. They are often used in automotive, manufacturing, construction, and warehouse applications to suspend drills, pneumatic tools,s and other heavy equipment that needs to be easily accessible and movable, Weight: 402.5 pounds, Manufacturer: IJSDNVJNDX