Our spring balancers have secondary safety chain to protect workers from damage. Our zero gravity tools balancer is easy to grasp tension adjustment, and ease of use. Our tools balancer incremental adjustments protect bot the tool and the operator. Load balancer with heavy duty aluminum housing for industrial environments. Shan Dong Finer Lifting Tools co.,LTD produce spring balancers professionally for more than 20 years, and our spring tools balancer capacity is from 1 kg to 400kg. the stroke is from 1.5 meters to 3.0 meters. If you have special required, customer-made products is ok for you. More information regarding spring balancer, please feel free let we know. Professional service will hope to get your satisfaction. Shan Dong Finer Lifting Tools co.,LTD Email:sales@cargotrolley.com http://www.cargotrolley.com/