Ngokuvamile, isibambo serola sinezitayela ezimbili: isitayela se-EU nesitayela sase-US.Isitayela se-Eu sinenduku eyodwa, sifanelekile endaweni yaseYurophu nasemakethe yase-Australia ikakhulukazi, amanye amazwe nawo ayayisebenzisa.Isitayela sase-US sinezinhlobo ezimbili zamakheji, amakheji ama-4 namakheji ama-5.Idumile e-USA, Canada nakwenye indawo yaseNyakatho Melika, indawo yaseNingizimu Melika njalonjalo.
Induku inezindlela zokwelapha ezimbili, iZinc plated ne-Chrome plated.I-Chrome plated ingcono, i-Zinc plated ingokomnotho.Induku inobubanzi obubili, 5.7 mm no-7.7 mm.I-7.7 mm inamandla, kodwa usayizi we-5.7 mm wanele kumaphrojekthi ajwayelekile.