Mounting Base Maximum Load Capacity 2 000 lb Includes OIPM Material Welded Steel Base Type Socket For Mast Diameter 4.5 in Compatible with Grainger Part Number 7CZ21 7CZ22 7CZ23 7CZ24 Compatible with Manufacturer Part Number 7CZ21 7CZ22 7CZ23 7CZ24 Color Red Finish Powder Coated