This is the Yeah Racing 3mm Ceramic Diff. Ball for Tamiya TA-05, TB-03, M05, TRF-416, TRF-415, TB EVO. 5, M03.
These Ceramic Diff. Balls offer precise and smooth action comparing with other steel and tungsten ball diffs. In addition, these also offer longer maintenance cycle this Ceramic Ball Diff. offers to TRF machines