VEIKO Retractable Workbench Casters kit 660 Lbs 4 Heavy Duty Caster Designed for Workbenches Machinery & Tables - Walmart.com
Workbench Casters - Lee Valley Tools
Mobile Wheels Heavy Duty Caster Steel Stepdown 360 Degree Rotatable Work Table Universal Accessories Furniture Durable Hardware - Furniture Casters - AliExpress
Amazon.com: SPACECARE Heavy Duty Retractable Casters 600 Lbs Capacity Set of 4 Adjustable Stepdown Wheels or Workbenches Tables and Equipments ,Side Mounted : Industrial & Scientific
Amazon.com: DOZAWA Workbench Stepdown Caster, 600 Lbs Set of 4 Durable Heavy Duty Steel, All Steel Construction Urethane Wheels [New Version] : Industrial & Scientific