Check the listing for details. GRAINGER APPROVED TS4 100 RP14 T19 Plate Caster,Swivel,Phenolic,5 1/2"H 5VF68. Condition: New. Listed at 41.57 USD. Swivel, Plate Caster, Load Rating 550 lb, Swivel Lock Type No Lock Included, Wheel Dia. 4 in, Wheel Width 1 1/2 in, Wheel/Tread Material Phenolic, Wheel Core Material Phenolic, Non-Marking Yes, Number of Wheels 1, Caster Brake Type No Brake, Tread Shape Standard These light-duty kingpinless plate casters have triangular mounting plates and are suitable for applications where there is limited surface area for mounting the casters, such as when the casters will be mounted into a corner and there is no material on the inside area of the mounting surface for attaching a caster with a square mounting plate. Kingpinless casters with a triangular mounting plate typically have lower weight capacities and can tolerate less shock and impact than other types of kingpinless casters. They are often ins.