●『SPECIFICATIONS』 The 4.80/4.00-8 tire and wheel is made of high-quality Polyurethane foam and iron hub. The replaceable wheel Diameter 16", Tire Width 3.74", Centered Hub Length 6", Axle Hole Diameter 5/8". (Please check the axle hole diameter before purchase) ●『MULTI-DEVICE COMPATIBILITY』The air less tire is the best solid wheel replacement for pneumatic tires. And wide application for 16" Hand Truck Wheel / Utility Carts / Dollies / Garden Utility Equipment / Tool Cart / Garden Carts / Cleaning Tanker and Snowplough. (Not for highway use) ●『QUALITY UPGRADE』 The 16 inch flat free tires are made of durable Polyurethane material, have a service life longer than other ordinary hand truck tires with a load capacity of 440 lb. Determined that the wheelbarrow wheels have the same elasticity and impact resistance as pneumatic tire on wheel. ●『NEW FRICTION DESIGN』 The square grain surface design of the 4.80/4.00-8 wheelbarrow tire increases its bearing and non-slip capacity greatly. With added grip and shock-absorbing performance, the utility wheel of carts can achieve a perfect balance of traction and maneuverability. ●『24 HOUR SERVICE』If you have any questions during use. Dont hesitate to contact us directly via our customer service team. We will answer your questions and requests in a prompt manner.