Discover our range of Colour Marking Rings designed specifically for the FG series made out of Carbon Steel. These rings are essential accessories for STAUFF Quick Release Couplings, enhancing the functionality and identification of your Carbon Steel Flat-Face Screw-to-Connect Couplings. Ideal for industrial applications, these Colour Marking Rings ensure easy recognition and organization of your FG series couplings, improving efficiency and safety in your operations.