Confined Space Hoist Mast Extension, Height 3 3/4 ft, Color Silver, Yellow, For Use With Mfr. No. DH-3, Mfr. No. DH-4, Mfr. No. MR50GB/50FT, Tensile Strength 5000 lbs., Compatible Component Davit Base, Upper Arm Mast, Finish Powder Coated, Zinc Plated, Confined Space Component Lower Mast Extension, Weight Capacity 450 lb, Material Aluminum, Steel, Entry Orientation Vertical, Anchorage Point Rating 5,000 lb, Confined Space Item Davit System, Mast Diameter 3 in, Mast Style Lower Mast Extension