This is a replacement Traxxas Rear Stub Axle, and is intended for use with the Traxxas Slash 4x4, Slash 4x4 Ultimate, Rally and Slash equipped with the optional Traxxas Rear Constant-Velocity Driveshaft Set (TRA6852R).
I purchased the traxxas brand cvd axles thinking that keep my traxxas all traxxas was a good idea. Since then I e replaced appropriately 8 of these stubs. I’ve sheared them off at the base of the threads and at the hex pin. I believe the steel is too strong and with small diameter it becomes brittle. I wish there was a thicker or titanium option. Other than outer boots ripping and stubs snapping I have yet to break any other parts! Wish there was a 6mm option or titanium.