The Rust Retainer Is Fitted On The Last Galvanised Rod, Before The Cylinder, Preventing Rust Or Sand From Settling In The Cylinder. The Rust Retainer Is Supplied Standard With The Rds Cylinders But Can Be Fitted To The As Cylinder As Well.
Its great, our dogs love it. I suggest you highlight that the filter needs to be changes around every two weeks and you offer addition filters to be purchased. After reading the instructions I realized I needed to buy additional filters which I bought from Takealot.
