Replace the stock diff balls in your Associated RC18T with these harder Carbide Diff Balls from Associated"s Factory Team. FEATURES: Carbide steel construction stays round longer than the stock balls for a smoother differential INCLUDES: Eight 2mm carbide diff balls REQUIRES: Installation following the kit manual SPECS: Diameter: 2mm COMMENTS: The stock diff balls are included in the diff rebuild kit ASCC0115 or the complete diff kit ASCC0024. kpm12/08/2004 ir/jxs