Slipper Clutch Eliminator for Traxxas E-Maxx E-Revo Summit T-Maxx 3.3, Revo 3.3 Slipper Clutch Eliminator for 1/10 E-Maxx, E-Revo, Summit, T-Maxx 3.3, Revo 3.3 Slipper Clutch Eliminator on Traxxas 1/10 E-Revo, E-Maxx 16.8/Brushless, and Summit Transmissions. also works on T-Maxx 3.3 and Revo 3.3 Transmissions. Simple to install, use your existing cross pin, bearing, spring, nut and spur gear to complete. Your are purchasing just the slipper eliminator, other items in the pictures are for show.