Vintage Kroffer oboe reed tubes. I received these from a senior oboe player over a decade ago. They were originally 47mm tubes, but the previous owner cut them shorter because they were having trouble with a low pitch. However, I believe the inner diameter was not altered, so it should only result in a higher pitch. Strictly speaking, the taper might be different from the original 45mm tubes (as it was originally a 47mm taper), so the pitch might feel slightly different. I had many 45mm tubes at the time, so I kept these in storage without using them. They were quite dirty, so I cleaned them thoroughly a few years ago. The tubes themselves don't appear to have any damage and should be usable without any problems. The listing is only for the five tubes in photo 1. As a precaution, I have also lightly disinfected them before listing.