WEAR-RESISTANT: This Wheel Tire is made of rubber material, wear-resistant, not easy to wear and elastic.ADVANTAGE: Built-in accurate bearings, suitable for a variety of tool carts.Inflatable type changeable inner tube. With non-slip patterns on the tire,it is more stable.LOADING CAPACITY OF SINGLE TIRE: Good loading capacity of single tire, suitable for many working occasions. The load capacity of single tire is 250kg / 551.16 lb(approx.)Diameter: 150mmMaterial:Rubber + metalcolour:Black + greenPackage Contents:1 * CasterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.