Chipanera chine nzira ina, chinozivikanwawo sechipanera chemavhiri mana kana kuti Phillips spoke wrench, chishandiso chine mabasa akawanda chinowanzoshandiswa kubvisa nzungu kubva mumavhiri. Iyo inowanzo ratidza mana-nzira dhizaini ine mana akasiyana socket head saizi kumagumo ega ega kuti agare akasiyana siyana e nzungu saizi anowanzo kuwanikwa pamotokari.
Yakagadzirirwa kupa nzira inokurumidza uye inoshanda yekubvisa kana kuomesa nzungu pamavhiri, mana-nzira wrench inowanzoshandiswa kuchinja matayi kana mamwe mabasa ekugadzirisa motokari. Iwo akasiyana masokisi emusoro saizi pane wrenches anobvumira vashandisi kushanda nyore neakasiyana saizi nzungu pasina kuchinja pakati pezvishandiso zvakawanda.
Aya ma wrenches anowanzo kugadzirwa kubva kune yakasimba zvinhu, senge simbi kana chrome vanadium, kuve nechokwadi chekusimba uye kusimba kwekudzokorora kushandiswa. Ndiyo imwe yeanofanirwa-kuva nemidziyo yevanofarira mota, nyanzvi mechanics, uye avo vanoda kugadzirisa mota.
Iyo ina-nzira wrench ine zvinotevera maitiro:
Pakazere, iyo 4-nzira wrench chishandiso chine simba, chiri nyore uye chinoshanda chehukuru hwakasiyana hwenzungu, nekusimba uye huwandu hwakawanda hwekushandisa.