Color Marking Rings are essential accessories for STAUFF Quick Release Couplings, specifically designed for Carbon Steel Flat-Face Push-to-Connect Couplings in the Series FU. These rings provide a simple yet effective way to visually identify and differentiate between various couplings in industrial settings. By using different colors, users can easily manage and organize their systems, ensuring quick and error-free connections. The Color Marking Rings enhance safety and efficiency, making them a valuable addition to any setup utilizing STAUFF's carbon steel quick release couplings.