This is a power double up slipper pressure plate and slipper hub for the Revo, t-maxx Summit, long chassis e-maxx, 4x4 Slash etc. These are a part of the slipper assembly, and are compatible with the stock Traxxas slipper pads. Features: conk aluminum construction with hard anodizing. Allows you to double up the slipper surface to increase power transfer. You will receive: one slipper pressure plate one slipper hub requirements: installation onto vehicle. Comments: this Replaces Tra5351 note: for double the slipper surface order 2 sets of tra5352x, trx15hs, or trx15gs.