Qondisa futhi Usika Umshini Ngokunemba Okuphezulu, umshini ungenza ishidi likathayela neshidi eligoqiwe elibandayo elinogqinsi oluhlukene lwe-1.5mm, 2mm no-3mm, amamodeli amaningi ayatholakala.
Ukunikezwa okukhethekile Ithangi lokugcina amandla. ukwandisa amandla okusika futhi uthuthukise isivinini sokusika