Snaphooks

Hello

I have been using the F2 bag for 2 years and the snaphooks virtually lost their black surface coat by using.
Last week, after travelling on a boat in the sea, both the snaphooks and rings got [B][COLOR="Red"]rusty[/COLOR][/B] becuase of the sea water drops.

How this can be fixed? How the snaphooks and rings can be changed eventually?

Thank you for any help concerning the issue.

KamKab