3 products Ringfeder® Drawbar eye acc. to VG 74059 A high-quality Ø76 mm towing eye. Version according to VG 74059 Ringfeder® drawbar eye type RF153A HD A high-quality Ø50 mm towing eye for use with 50 mm bolt couplings. Heavy-duty version for tough operation. Ringfeder® drawbar eye 50 DIN 74053, design A A high-quality Ø50 mm towing eye for use with 50 mm bolt couplings. DIN 74053. For 12000 kg admissible total weight of the rigid drawbar trailer.