Use for T-Rex 600/600 Nitro.
New design of one-way bearing for preventing locking.

Included in package:
* One-way bearing HF1216 x 1(12x18x16mm)
* Main gear case x 1(55x14.5mm)
* Hex socket self tapping screw x 5(T3x7mm)
* One-way bearing shaft x 1(9x12x34.55mm)
* Washer x 1(11.5x18x0.8mm)