This is a lightweight case for alto trombone from Tianjin, China. It is made for John Packer UK, sellers of the JP Rath alto trombone. This case is included with the JP Rath, but it has a universal fit for nearly any alto trombone. Instruments with trill rotor or Bb rotor should fit fine. Check your hand slide length. Some older German instruments with the long tenon may not fit. Shown in the photos with an Adams AT1 Glassl model. That hand slide could possibly fit in the other direction, it doesn't matter that much.