Planetary gearing is used to minimize operator effort and to reduce stress on the brake components.Small size allows operation and storage in tight places.Lightweight and durable all steel construction with plated frame components and durable chrome exterior finish to resist corrosion.Grade 80 Zinc plated alloy load chain is manufactured in Germany, Austria or Japan.Sleeve bearing used to maximize serviceability and provide good efficiency.Self adjusting pawl and disc type mechanical load brake insures positive load control.Meets: ASMEANSI B30, OSHA, NASA STD-8719.9 and EUDirectives: 9837EC.