Zero gravity tools with best quality
Spring tools balancer with higher working life for 100,000 times with no matter. Zero gravity tools with best quality Power master with higher quality and more professionally. Spring tools balancer have capacity from 1 KG to 400KG. Our spring tools balancer the two model HP1-3 and HP3-5 have self-locking function. If you draw the balancer and then loose it, the balancer turn back and next time,if you draw it then loose, the spring tools balancer will keep it there with no lifting. It means self-locking. The stroke of this self-locking power master is 3.0 meters. Up to 5 kg spring tools balancer there are no self-locking function. The stroke is 1.5 meters. http://www.cargotrolley.com/
