Ngokwesiqhelo, isibambo serola sinezimbo ezibini: isitayile se-EU kunye nesitayile sase-US.Isimbo se-Eu sinentonga enye, silungele indawo yaseYurophu kunye nemarike yase-Australia ikakhulu, amanye amazwe nawo ayayisebenzisa.Isimbo sase-US sineendidi ezimbini zekheji, iikheji ezi-4 kunye nekheji ezi-5.Idumile e-USA, eCanada nakwenye indawo yaseMntla Melika, indawo yaseMzantsi Melika njalo njalo.
Intonga inezonyango ezimbini, i-Zinc plated kunye ne-Chrome plated.I-Chrome plated ingcono, i-Zinc plated iqoqosho.Intonga ine-diameter ezimbini, 5.7 mm kunye ne-7.7 mm.I-7.7 mm yomelele, kodwa ubukhulu be-5.7 mm bunele kwiiprojekthi eziqhelekileyo.