This is an optional Front One-Way Unit (differential) for the models with the Tamiya TT-01 chassis like the Enzo Ferrari.

FEATURES: Aluminum and nylon construction

INCLUDES:

One aluminum,left one-way housing (w/ pre-installed one-way bearing)
One aluminum,right one-way housing (w/ pre-installed one-way bearing)
Two 39 tooth black nylon ring gears (one is a spare)
Two black steel one-way joints
Two 6x10mm flanged bearings
Two white plastic bearing spacers
Four 2x8mm cap screws
Three 6mm washers
One 1.5mm allen wrench (to tighten the cap screws)

REQUIRES:

Assembly of the one-way unit using the included instructions and
installation into the model following the manual that came with the
model.