This is an optional RPM Long Traxxas Turnbuckle Rod End Set. RPM Rod Ends for Associated and Losi vehicles have been some of the best selling RPM parts for over 2 decades! That same engineering, combined with bulletproof RPM materials, 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), and are sold in sets of twelve to complete most vehicle needs.