Set of 4 Premium Buy Casters Brand Swivel 4" Casters for all Commercial Kitchen Prep Tables with a 1.5" Inside Diameter Leg Tube, like Griddman , Advance Tabco and many more. NSF listed & RoHs Compliant . 1,400 LBS Capacity per Set (350lb each). Chemical and cleaning solvent resistent. Each caster is equiped and assembled with a Non-Marking Gray Polyurethane Wheel, an Expandable Adapter and a Tech Brake. Tech brakes are mounted on the front of the caster for ease of use and exception braking power. The Expandable Adapter Stem Adjustment Range is from 1.426" to 1.589". increases the table overall height by 5 Inches.