Wooden duct flute, 324 mm in length, with a fipple-shaped mouthpiece. It has 5 single and two double finger holes on the front side and a thumb hole on the back side. It consists of two detachable sections, one of which is decorated with engraved rings. Two inscriptions can be seen on the surface of the instrument, one of which is printed: “ADLER” and the other impressed: “BAROQUE”. It is accompanied by a black cloth case.