The package contains 2 pcs

Ball Bearing (5x11x4) - Pack of 10

so you can drive all year round and just go for it

You can find out which battery pack Traxxas recommends for your car here:

Huina Excavator (new model)

super drift 4wd Color:Muscle The package contains 2 pcsBeginner friendly remote controlled car with 4 wheel drive and real drift wheels. Perfect for slides and wild angles around the dining table. Need some speed? Switch your Super Drifter into high speed mode on the transmitter and attach the included high grip wheels and just like that, you've transformed your drifter into a true high speed racer! A little bonus feature is the light switch on the transmitter, so you can turn the car's lights on and off