Part of the bell, pointing forward; NB: ➺ homonym (stock of the bellows [synonym of Jabłko]).

The dominant type in the central and northern counties consists of two curved wooden halves, covered with tough leather and metal bands; A regional variant, widespread in the Jarocin-Krotoszyn district, is not covered with leather, which, according to maker Stefan Lis, results in a better resonance; A strictly regional phenomenon is a "knee" made of horn; This occurs in higher-pitched bagpipes, i.e. in Rawicz in Gostyń.