Trailer Stabilizing Jack Spin Top Static Load Capacity 50 000 lb Adjustment Range 41 in to 57-1/2 in Lifting Capacity 5 000 lb Yellow Base Dimensions 13-3/4 in Dia Top Plate Dimensions 5 in x 5 in Material Steel Wheel Material Solid Rubber Wheel Width 1 3/4 in Wheel Diameter 8 in Includes (6) Position Locking Pin Standards Meet OSHA Regulations With Wheels Yes