Amazon.com: Casters Set of 4 Heavy Duty 6 inch with Brakes 2 and Fixed - ASRINIEY Locking Casters with Quiet Polyurethane on Steel Wheels, Swivel Plate Industrial Caster for Tool Box Trolley
Castor Trolley Wheels 30mm UNIVERSAL Rubber Fixed Middle 1'' Small Mini - 8 Pack 5057817512740 | eBay
Caster Wheels: Types, Applications, Benefits, and Manufacturing
5'X2' Heavy Duty Aluminium Core PU Wheel Swivel Trolley Caster - China Polyurethane on Aluminum Core Wheels, Polyurethane on Aluminum Core Caster | Made-in-China.com
GYPTOOL Heavy-Duty Drywall Cart Caster Wheels (Set of 2) DOLLY-WHL_2. - The Home Depot
Amazon.com: GBL 2" Heavy Duty Caster Wheels with Brakes + Screws - up to 440Lbs - Set of 4 No Floor Marks Silent Castor for Furniture - Rubbered Trolley or Pallet Swivel
POWERTEC Swivel Heavy-Duty Industrial Caster, 8 in. Wheel Dia 17051 - The Home Depot
5'X2' Heavy Duty Aluminium Core PU Wheel Swivel Trolley Caster - China Polyurethane on Aluminum Core Wheels, Polyurethane on Aluminum Core Caster | Made-in-China.com