This is the Team Duratrax ball bearing set for the Team Associated B3 Team (not Basic or Sport) and T3 (all versions).
Includes: Thirteen 3/16 x 3/8 plain (wheels and transmission top and middle), two 3/8 x 5/8 plain (transmission bottom or outdrive) and two 5/32 x 5/16 plain (differential)
This bearing set may be used on the B3 Sport and Basic. This bearing set will work with all versions of the T3. If installing this set on the Factory Team T3 version which has MIP CVDs, all bearings will be used. All other versions of the T3 use only 13 bearings.