The NextGen TranzVolt e-Hoist™ is a revolutionary product perfect for lifting solar panels, shingles, tools, and other construction supplies to the roof easily and quickly. Other products also available.
Safety Rail Source LLC
2570 Boulevard of the Gen #200, Norristown, PA, United States 19403
https://safetyrailsource.com/pages/tranzvolt-e-hoist-and-supplies