Few things are more difficult to clean than rust. It can ruin just about any metal object. Not only does it make the tell-tale red discolouring, but it can also mar the surface with little pits and gouges. Hammerite has developed a very efficient and safe solution to remove rust from metal items: Hammerite Rust Remover Gel.
Apply the gel onto the surface giving a coating of 1.5 mm and leave it for 20 minutes (longer if necessary).
Then simply rinse it off.
This process can be repeated as many times as necessary.
The improvement is clearly visible after each application. Any suitable paint can be used after the rust has been removed.