Iimbonakalo:
Inaliti yobulukhuni obuphezulu, Yakhiwe ngentsimbi ye-alloy tungstenYenzelwe ukutshixa ngokukhawuleza kunye nokugqobhoza ityhubhu yesikhenkcisiGcoba ityhubhu yesikhenkcisi kwaye ubuyisele ifriji endala ngoko nangoko.Yenziwe ngentsimbi ye-alloy ephathwa ngokushushu yomgangatho ophezulu wokuqina.