2 products Ringfeder® drawbar eye type 480 - complete A high-quality Ø50 mm towing eye for use with 50 mm bolt couplings (DIN 74052). With a D-value of 320 Nm this drawbar eye is suited for very heavy loads and heavy-duty operation. Including drawbar eye... 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.