2.50-4" SOLID WHEEL ASSEMBLIES - These Solid PU Run-Flat tire and wheel assemblies are the perfect replacement parts for wheeled equipment with wheels that have an outer diameter of around 8 inches, rim diameter of 4 inches, and tire width of 2.50-3 inches, 2.2 inches offset hub. load capacity of 400 lbs. 8" SOLID TIRES AND WHEELS FOR UTILITY EQUIPMENT - 10 Inch solid wheel highly compatible with yard tractors, wagons, garden carts, hand trucks, dollies, trolleys, pressure washers, and more! Convert now to more efficient and maintenance-free tire and wheel assemblies! (Please note: Not suitable for long-term static parking.) 5/8" BEARINGS AND FREE ADAPTER KIT 3/4" BEARINGS AND SPACERS - The wheel assembly has an axle borehole inner diameter of 5/8 inch that will universally fit on 5/8-inch axles. Each pack includes 3/4 inch bearings * 2; 1/4 inch long spacers * 2; 1/2 inch long spacers * 3; and metal spacers * 2. HEAVY-DUTY SOLID PU TIRE AND WHEEL ASSEMBLIES - The layered 100% premium PU ensures that the rubber tires can perform excellently under heavy-duty applications. The solid and durable construction ensures that the tires are puncture, tear, wear, and rot-resistant. The rims are steel with solid metal hubs that resist impact cracks and suitable for all-terrain use. SAFE AND COMFORTABLE TUBELESS TIRES AND WHEELS - Sharp debris and punctures are no issues for these flat-free solid rubber tires. Not only that, they can perform on terrains where pneumatic tires can easily fail. They are best for utility equipment that operates on rough terrain and requires rough handling. There’s no risk of flats, explosive punctures, and pinched inner tubes!