Sennheiser HD 25-1 non-rotatable headband arm

When looking to replace just the arms of the original headband I found there was a difference between the left and the right arm. One arm is able to rotate, while the other isn't. The arm included in https://www.thingiverse.com/thing:244966 is the rotatable arm (which I based this model off of). For those looking for the non-rotatable arm, this model should do the trick.