selling RPM parts for over 2 decades has gone into the creation of RPM Rod Ends for Traxxas 1/10th scale vehicles. These rod ends are tough! The area around the ball stud is thicker than the stock rod end while still allowing a full range of motion of the pivot ball. Additionally, the shank has been redesigned with a pair of flats, making the rod end much easier to work with (versus the stock, round shank). RPM rod ends are sold in sets of twelve to complete most vehicle needs.