This is a set of RDLogics Teflon Coated Pivot Balls (4) for the Revo (2.5 & 3.3), T-Maxx (.15, 2.5, 2.5R, & 3.3), and MGT.  These are very strong, and they work awesome.

RDLogics parts are built with the racer in mind, and they are constructed of the highest quality materials. These are a must for high-performance vehicles and people who want the best.