Mounting Base, Maximum Load Capacity 2,500 lb, Includes Mounting Template, Material Steel, Mount Hole Diameter 0.69 in, Overall Height 15.38 in, Overall Width 16 in, Overall Depth Not Applicable, Base Type Socket, For Mast Diameter 4.56 in, For Maximum Span Not Applicable, Compatible with Grainger Part Number 54YM57, 55VE62, Compatible with Manufacturer Part Number OZ2500DAV, OZTP2500DAV, Color Yellow, Finish Zinc Plated