The exterior is powder coated to prevent erosion and rust If the suspended object is overweight, the coil spring breaks and locks immediately, preventing the suspended object from falling SCOPE OF APPLICATION: Used to suspend various tools, improve work efficiency and reduce worker fatigue. Encourages upright posture. Made of 100% non-toxic materials. Convenient for parents. Minimalist booster seat for the home. Grab and go handle for easy travel Spring Balancer 15~22kg(33~49lbs) Retractable Spring Tool Balancer... VEVO Sping Balance 33-49lbs (15-22kg) etactable Tool EXCELLENT MATERIAL: heavy duty steel structure, strong and firm, not easy to deform. The operator can adjust the tension of the spring and the height of the rope according to his own needs to achieve the desired effect Spring Balancer YJINGRUI Retractable 1~3kg(2.2~6.6lbs) Hanging Tool Holding Hands Mold Kit It greatly reduces the labor intensity of the task work and improves the labor productivity WITH SAFETY DEVICE: It does not need any electric power or pneumatic force to realize safe work. Specification: Name: Retractable Spring BalancerLoad-bearing capacity: 30-40kg/66.14lbs-88.2lbsMaterial: steelWeight: 17.63kg/38.8 lbsApplicable to industrial fieldsPacking List:1* Spring Tool Balancer RetractorNotes:1. Due to different lighting and screen settings, the item color may be slightly different from the picture.2. Due to different manual measurements, please allow a 1-2cm difference in size. Improve your labor productivity with this durable tool. WORKING PRINCIPLE: The spring balancer utilizes the energy accumulated in the coil spring to keep the suspended operating tool in a floating state.