Medium Heavy-Duty Casters are the backbone of Material Handling Industry. Nearly every warehouse, freight terminal, manufacturing plant and industrial business use these types of casters in their Caster Type: Rigid Plate Caster, Swivel Plate Caster, Wheel Caster; Features: Brake, Half Round Tread, Swivel Lock; Height: 5.25 to 9.5 Perfect Steerable Transfer Carth