RWM Casters CIR-0420-08 4-Inch Diameter X 2-Inch Width Cast Iron Wheel with Straight Roller Bearing, 800-Pounds Capacity, 1/2-Inch Axle Diameter 24.21$
Sanbege 2" V Groove Wheels, 4 Pcs Heavy Duty Sliding Gate Roller, Rigid Casters with Brackets for Inverted Track, Industrial Machines, Wire Rope Rail (Each Loading Capacity 650 Lbs) 43.77$
Ultimation Heavy Duty 15″ Galvanized Steel Roller Set- 1.9″ Diameter Conveyor Roller and Bracket for DIY Roller Stands & Conveyors, 250lb Load Capacity, Spring-Loaded Design & Convenient Removability 42.28$
RWM Casters UPB-0420-08 4-Inch Diameter X 2-Inch Width Urethane on Polypropylene Wheel with Ball Bearing, 600-Pounds Capacity 20.30$
RWM Casters VIR-0420-08 4-Inch Diameter X 2-Inch Width Cast Iron V-Groove Wheels with Straight Roller Bearing, 800-Pounds Capacity 52.82$
RWM Casters VIR-0620-08 6" Diameter X 2" Width, Cast Iron V-Groove Wheel with Straight Roller Bearing, 1000 lb. Capacity 64.66$
RWM Casters SRO-3512-05 3-1/2-Inch x 1-1/4-Inch Soft Rubber Wheel with Iolite Bearing for 5/16-Inch Axle, 150 Pound Capacity 14.40$