Here is a summarized Amazon product detail description based on the provided information: Product Title: 4.10/3.50-6 Flat-Free Solid Tire & Wheel Assembly, 2-Pack Product Description: Upgrade your equipment with our high-performance 4.10/3.50-6 Flat-Free Solid Tires. This 2-pack set is designed for durability and hassle-free operation, eliminating the common problems associated with pneumatic tires. The tires feature a robust solid polyurethane construction that provides exceptional wear, puncture, tear, and corrosion resistance, ensuring a long service life even in demanding conditions. The sturdy iron wheel and reinforced metal rim are built to withstand impacts and resist cracking, making this assembly suitable for all terrains. Key specifications include a 13-inch tire diameter and a 3.7-inch width. The assembly is designed to fit a standard 3/4" bearing diameter, but we include adapter sleeves for 5/8" bearings for greater versatility. You can also easily fit various hub lengths (from 3 to 4.5 inches) using the provided spacers. The sawtooth tread pattern offers superior traction and grip, which is ideal for utility vehicles operating on rough or uneven ground. Please note: These tires are engineered for dynamic loads and are not recommended for long-term exposure to high static loads or for highway use. Wide Compatibility: This tire and wheel set serves as a perfect replacement for a vast range of equipment, including: Lawn Mowers Wheelbarrows and Garden Carts Hand Trucks and Dollies Yard Trailers and Dump Carts Snow Blowers Air Compressors & Generators Tool Carts and Trolleys Go-Karts and Wood Chippers Complete Package & Easy Installation: We ensure a straightforward installation process. Each package contains: 2 PCS Pre-assembled Tires with a 3-inch center hub and a 3/4" bushing. 4 PCS 5/8" Bearing Sleeves for compatibility with different axle sizes. A selection of Nylon and Steel Spacers (10x 1/4", 8x 1/2" width wheel spacers, and 8x 3/4" steel spacers) to help you adjust for various hub lengths. Our commitment to customer satisfaction includes providing all the necessary components for a seamless fit. Enjoy the convenience of never having to deal with flat tires or frequent inflation again