Description of spring balancer type

Load balancer come in many shapes and sizes,different types of zero gravity tools balancer have different bearing capacity. Hp1-3 is a type of spring balancer,This type of retractor from 1 KG to 3 KG,stroke is 3 meters,suitable for small weight. The second one spring tools balancer model is HP3-5,min load is 3kg,max load is 5kg,stroke is 3 meters. Net weight is 1.6kg, this kind of zero gravity tools balancer can pull heavier objects. Other models of spring tools balancer