Isicelo:
Umshini usetshenziswa ikakhulu ukumaka amaphrofayili we-aluminium kulayini, uhlanganiswe kuketanga olukhulu lokukhiqiza. Ubude bomkhiqizo bungamamitha ayi-3.1, amakwe ngawo wonke ama-5mm. Ulayini wokukhiqiza cishe u-3 kuya ku-5 wamamitha ngomzuzu.