Iiglavu zokhuselo ezikhokelayo zisetyenziswa ikakhulu kuvavanyo lwezonyango olubonelela ngokhuseleko lweXreyi olusebenzayo koogqirha kunye nezigulana. Sinokubonelela ngobungakanani obahlukeneyo kwaye sikhokhele iiglavu ezilinganayo zokukhokela ngokweemfuno zakho. Sinokubonelela nge-0.25mmPb, 0.5mmPb kunye ne-0.75mmPb iiglavu ezihamba phambili ezilinganayo ngemibala eyahlukeneyo kunye nobukhulu.
