Hannun hannu
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Bakin Karfe Madaidaicin Simintin Simintin Simintin Zuba Jari
Hannun gwiwar 90-digiri shine adaftan gama gari.Tun da bututun haske ba shi da curvature, ana iya daidaita shi kawai ta hanyar adaftan don canza shugabanci da diamita;gwiwar gwiwar 90-digiri yana da zaren ciki biyu, zaren waje biyu, da zaren ciki da waje.Akwai nau'ikan nau'ikan guda uku, mai aiki zai iya zaɓar don haɗawa gwargwadon buƙatun rukunin yanar gizon.