Tamiya Ball Bearing Set TT01

These are Ball Bearings from Tamiya.

FEATURES:
Functional with Tamiya's TT-01 chassis vehicles (Expert Developed).
Ball bearings are the most crucial part for tuning up your R/C
    cars and truck. Allows increased top speed and longer part life.
Sealed, stainless-steel ball bearing set.
#1150 bearings are utilized with spur gears.
#1280 bearings are utilized with differential gears.

INCLUDES:
(12) #1150 5 x 11mm Ball Bearings
(4) #1280 8 x 12mm Ball Bearings

NEEDS:
To replace bearings describe TT-01 chassis instruction manual