They are used for spreading materials such as peat moss. I have not been able to find one. Many people have commented on seeing them at places where they have equipment rentals. I have not been able to find one locally. Does anyone know where I can get some information on them or a place to buy one??? Thanks for any help in advance. Kris I have posted this in the Lawn Care Forum as well. I thought that it might get an answer here too.