Taken from a new Traxxas Rustler 4x4, factory filled with diff oil.

Fits all the 1/10 4x4 cars including Slash 4x4, Rustler 4x4, Stampede 4x4, Rally 1/10 & Hoss. 

Note: Brushed versions use a different ring and pinion gear to give lower gearing.

Differential itself can be used at front or rear.