* Change 10 Part Red {6628 Technic, Pin with Friction Ridges Lengthwise and Tow Ball (Undetermined Hole Type) to 6628a Technic, Pin with Friction Ridges Lengthwise and Tow Ball with Round Pin Hole}
Comments from Submitter:
All my new red parts are 6628a, and I never sold any. Many of them came from parting out this set.
* Change 10 Part Red {6628 Technic, Pin with Friction Ridges Lengthwise and Tow Ball (Undetermined Hole Type) to 6628a Technic, Pin with Friction Ridges Lengthwise and Tow Ball with Round Pin Hole}
Comments from Submitter:
All my new red parts are 6628a, and I never sold any. Many of them came from parting out this set.
All of the red ones are going to end up having a round pin hole. They are all
in newer sets and the squared pin hole seems to have been something that was
phased out of the part in the early 2000s.