These wheels are cost competitive and resistant to most environments that may cause damage to rubber wheels. The polyolefin hub is inexpensive and greatly reduces the overall weight which results in a lower load capacity of around 375 pounds. Moldon rubber wheels have a firm tread making them ideal for heavy loads. They are best suited for smooth warehouse floors where they will roll more easily than any other type of wheel. For inexpensive wheels that can handle moderate loads on smooth surface s order the Polyolefin Hub Moldon wheels today