4″ Rigid Phenolic Top Plate 4-1/2″ x 6-1/4″25PH40Heat treated kingpin to enhance the load capacityZinc plated finish is attractive & corrosion resistant
4″ Rigid Poly Steel Top Plate 4-1/2″ x 6-1/4″25PU40Heat treated kingpin to enhance the load capacityZinc plated finish is attractive & corrosion resistant
4″ Swivel Phenolic Top Plate 4-1/2″ x 6-1/4″15PH40Heat treated kingpin to enhance the load capacityZinc plated finish is attractive & corrosion resistant
4″ Swivel Poly Steel Top Plate 4-1/2″ x 6-1/2″15PU40Heat treated kingpin to enhance the load capacityZinc plated finish is attractive & corrosion resistant
