Sold individually. Order the quantity of wheels you need. 50002$190.00 Dynamic Beach Wheel Upgrade kit for Seitech Dollies including AxlesIncludes both wheels and axles. All you need for 1 sling style Seitech Dolly. 50013$410.00 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