DVOYNOY PISHIK / DOUBLE PISHIK / PISHIKI - this traditional reeded woodwind instrument has different names. 
In English we prefer a name Double pishik. In Ossetia (Northern Caucasus) such instrument called STILI or wadevz. 
Materials: cane, beeswax, leather cord. Complited to a hard case.
Scales of pipes: 
D E F# G A B c 
D E F# 
Related instruments: Russian jaleyka (zhaleyka), Egyptian arghul, Eastern-Mediteranian mijwiz, Georgian chiboni, Basque alboca, ancient Greek aulos, Sardinian launeddas, Ossetian stili, Greek mantoyra, mantoypa, dudka, doodka