4" Plate Caster Wheels Set of 4 1800LB with Screw Safety Dual Locking and Polyurethane Foam No Noise Wheels,Heavy Duty - 450 Lbs Per Caster: Amazon.com: Industrial & Scientific
Pair Horse Cart Heavy Duty Bike Wheels 20"x2.125", 5/8"Axle, 3"Hub w/
Proaim Heavy-Duty Dolly Track Wheel Set HDD-B-TW B&H Photo Video
Push Cart Wheels, Heavy Duty PU Plate Caster Wheels with Bracket Bearings Repair Kits, Shelf Replacement Wheels for Platform Trucks up to 265 Pounds (4 Inch): Amazon.com: Industrial & Scientific
Extra Heavy | Super Duty | Extreme Duty Casters
8,000 lb (4 Ton) HD Dolly-Low Profile and Rotating