The frilka is characterized as an open-ended notched flute.
It is a pipe of approximately a 20 cm (8 inches) in length.
Six holes (now often 10) in groups of three are burnt out in the center of the instrument.
Shepherds were also able to accompany themselves with glutteral humming which produced an ostinato tone or drone.
The frilka is often called a floyarka or sometimes zubivka in central Ukraine.