This is the Flatbed attachment, used alonside selected MuckTrucks
 
The most popular accessory for landscapers and gardeners; the Muck-Truck® Flatbed is perfect for all those awkward loads that cannot be easily carried in the general purpose skip. The Muck-Truck® Flatbed sits above the wheels so that “oversized” loads like pots, paving slabs, bags of sand/cement/compost, drainage pipes, or ornaments can be carried with ease.
 
Price does not include the Mucktruck and is for the Flatbed attachment only