Rubber tip on the brake rod

Shipping a 1/4" x 1/4" piece of rubber in a plane white envelope doesn't ship for $0.55, it is now an irregular shaped parcel and can not run through the USPS mail system and when the envelope gets torn open (and it will) and the part is lost you have a dissatisfied customer and your reputation gets harmed.

I have bought parts from members here who did not properly protect the parts. The parts got damaged, in one case it was NOS and one was Unobtanium. I do not do business with those sellers any longer, PERIOD!
Dana67Dart, it is true what you say. Last year I shipped a Viraga pill to a friend and she got the envelope, but it was torn open, and the pill was missing. That is about the same size of the rubber tip. I didn't think of a machine tearing the envelope, I thought someone thought it being a ring or something else valuable.