Matthews has released a new accessory for the Dutti Dolly that allows it to accommodate mid-level and floor spreader tripods with a 30″ diameter or less.
If you want to learn more about the Dutti Dolly, Erik has done an extensive review on it here.
The Tripod Wings can be installed without using any tools using the four included wingnuts.
The Tripod Wings are sold separately and cost USD $459.