Acuɣer i Hollow Core Drill ay yessefk i t-yessiwin n tbanen n uɣef
Azul n amac: 1. Fehmeṛ-nnes n Hollow Core n tneqqin. Ssiwin n tmeddurt ara ttḥemmleḍ mi ara tferneḍ n tnebbit n tnebbimt n tmerwin. 7. Ɣef yimiriyen aydeg i rrbeḥ. Yiwen n ufal ay yesɛa gai
