16″ x 4″ pneumatic tire mounted on plastic rim containing non-friction Delrin ball bearings for effortless rolling on any surface. . Hub has 3.25” bore length and receives 1” diameter wheel shaft. Sold individually. Order the quantity of wheels you need. 50001$85.00 WE SHIP WORLDWIDE! We charge the actual cost of shipping. You may email us for a shipping cost estimate. Send us email intensitysails(at sign)gmail.com US$10 MINIMUM ORDER