Go to the Stewart Steel website.There are 2 Stewart Steels if you do a search.The one you want is in Canada.They have pictures there.Everything appears to be bolt on in place of the elephant ears.They do not work like the Marlins.The Marlins are an abbreviated version of the OEM impellers that propel the crop round and round while the vanes screw it on in.The AFX type flighting works like a drill bit,auger,post hole digger etc. to actually pull the crop away from the feeder chain and move it into the cage.A vast improvment in my opinion.Although it must have taken a while to get it just right.