I dont know what they are called. But does anyone know where to get those metal Or Plastic skid plates for pulling the hose around? To stop it from getting caught on the rebar at every clamp.

Side note i dont know if they are available for 3-4in hose. That would be ideal size for me. also would preffer some sort of plastic. any help on locating them would be appreciated 

http://conforms.com/products/hose/hoseaccessories.html

Go with the metal ones.  Seems like guys dont respect the plastic ones and they break easy.  Dont ask how I know.   

I use metal discs from a farmers set of harrows and weld a clamp on it,works good.