4 inch Heavy Duty Caster | Swivel and Brake | 300-Pound Load Rating
Swivel Ball Caster Roller Transfers Set of 4 Swivel Ball Castor Furniture Trolley Screw Mounted Round Casters - Walmart.com
RWM Casters CIR-0420-08 4" Diameter X 2" Width Cast Iron Wheel with Straight Roller Bearing, 800 lbs Capacity, 1/2" Axle Diameter: Hardware Wheels: Amazon.com: Industrial & Scientific
3 inch Heavy Duty Casters Load 1500lbs,Lockable Bearing Caster Wheels with Brakes,Swivel Casters for Furniture and Workbench,Set of 4 (Free Screws): Amazon.com: Industrial & Scientific
Handi Quilter Heavy Duty Casters for New HQ Studio Frame