This is a set of 46 oboe tubes, GÜRTZIO 1. The set includes 7 tubes at 47mm (current production), 5 tubes at 46mm (current production), and 26 tubes at 46mm from an earlier period with a wider inner diameter. Additionally, there are 8 tubes that were experimentally modified from 47mm to 46mm by trimming the bottom. These offer a different quality compared to the original 46mm tubes. A mandrel is also included, which is perfectly compatible with the current production tubes. For the tubes from the earlier period, please use the mandrel only for thread wrapping. These are not sold individually. Thank you for your interest.