Nthawi zambiri, chogwirira chodzigudubuza chimakhala ndi masitayelo awiri: kalembedwe ka EU ndi kalembedwe ka US.Mawonekedwe a Eu ali ndi ndodo imodzi, ndi yoyenera kudera la Europe ndi msika waku Australia makamaka, mayiko ena amagwiritsanso ntchito.Mtundu waku US uli ndi mitundu iwiri ya khola, makola 4 ndi makola 5.Ndiwodziwika ku USA, Canada ndi dera lina la North America, dera la South America ndi zina zotero.
Ndodoyo ili ndi njira ziwiri zochizira, Zinc yokutidwa ndi Chrome.Chrome yokutidwa bwino, Zinc yokutidwa ndi chuma.Ndodo ili ndi ma diameter awiri, 5.7 mm ndi 7.7 mm.7.7 mm ndi wamphamvu, koma 5.7 mm kukula ndi zokwanira ntchito yachibadwa.