The second section: 65 mm

Spring: stainless steel anti-corrosion spring

Features:

Ergonomic integral sound hole

Configuration: adjustable finger rest, natural cork, advanced lightweight canvas music box

Double section: 64mm and 66mm double section

Spring: carbon steel anticorrosive spring

Features:

Ergonomic integral sound hole

Configuration: adjustable finger rest, light body hard box leather trim.

Double section: 64mm and 66mm double section,

Spring: carbon steel anti-corrosion spring,

Features:

Ergonomic integral sound hole

Natural cork, adjustable finger rest

Configuration: anti-skid and pressure relief finger rest, whistle, flute head, silver-plated clamp, silver-plated flute cap, inner cleaning cloth, tube body cleaning cloth, pressure relief strap, light body hard box leather decoration.