50 mm Flange Tow Ball, zinc plated, fits for two-bolt flange towbar, value D 17 kn, ... Tow Ball fits for Two-bolt Flange Towbar• Finish: Zinc plated• Value D: 17 kn• Value S: 205 kg• Distance between ... , ball mounts, trailer couplers, trailer connectors, bike racks, etc. Zinc Plated 50 mm Forged Tow Ball fits for Two-bolt Flange ...