The Splines on the Wiper linkage are fine. They appear to be steel (maybe brass given the colour actualy) but versus the aluminium of the wiper arms it has stood up fine.
However i'm a little disapointed with the second hand arms as they have considerable wear themselves (from a 98 car, mine was 2000). I am currently trialing them to see if they will work as they are definatly better than my old one, but am wondering if some locktight or something may be in order....or New arms from audi
