Brand: Pegasus Auto Racing Supplies
This is the same ball stud used on older Club Series GT Mirrors (made through 2015). Each mirror requires one ball stud at the base of the stem. Ball diameter 0.43", thread size 10-32 UNF. Sold individually.
The Billet Aluminum Mounting Flange (Part No. 5168-306) and Ball Stud Set Screw (Part No. 5168-307) are both sold separately.
Note: Club Series mirrors produced since the beginning of 2016 use larger 1/4-28 hardware and will not accept this stud.