Marathon 4.10/3.50-4" Flat Free, All Purpose Utility Tire on Wheel, 3.5" Centered Hub, 5/8" Bearings - Walmart.com
Amazon.com: 10" Heavy Duty 4.10/3.50-4 Tire - Dolly Wheels and Hand Truck Wheels Replacement - 4.10 3.50-4 Tire and Wheel for Gorilla Cart, Generator, Lawn Mower, Garden Wagon. 5/8" Axle Borehole (2 Pack) Ram-Pro : Automotive
Amazon.com: (2 Pack) AR-PRO 4.10/3.50-4" All Purpose Utility Air Tires/yellow Wheels with 10" Inner Tube, 5/8" Axle Bore Hole, 2.2" Offset Hub and Double Sealed Bearings for Hand Trucks and Gorilla Cart :