4 products RINGFEDER Automatic Coupling Oiler Proper lubrication eases movements and makes the coupling less prone to wear and corrosion. This increases reliability and reduces the need for repairs. Coupling oil Maximum protection from salt, dirt, moisture, frost and oxidation. Does not congeal at low temperatures. Specialized on this application: A multipurpose oil needs to cope with many applications/deman... C-Coupling RINGFEDER AM mechanism operating kit C-Coupling, with 2,7m rubber tube. Gauge Gauge suitable for coupling and drawbar eyes 40/50 - only suitable for pre-departure check (not calibratable)