The retractor tool balancer is ideal assembly power tools. These durable tool balancers provide easy handling for operators that work with tools for long, continuous hours. The tool balancer allows a tool to be positioned over the work station for comfortable operation. Protects an assembly tool from accidentally damage, like being knocked off a workbench. The effortless handling of the balancer provides comfortable tool operation and increased production. The tension of this lightweight balancer can easily be adjusted by hand with the adjustment knob on the side. Model:MR-11 Tool Weight:2 lbs. Balancer Weight Capacity:5.5 - 11 lbs. Stroke - American:79" Stroke - Metric:2 m