This is a Repairable/Rebuildable Row Cleaner Cylinder with extra wiper for reduced dirt exposure to the seals. This cylinder has a high quality rod wiper and seals that last approximately 4x that of non-repairable cylinders. Fits most row cleaners on the market. Exceptions include Older (Pre 2024) MartinTill ACCR and AgFocus Primo and Ninja row cleaners. Newer (Post 2024) MartinTill ACCR with 3 hole mount work.