Hannun hannu
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Simintin ƙarfe gwiwar hannu welded gwiwar hannu mara sumul waldi
Elbow wani bututun haɗin gwiwa ne na gama gari a cikin shigar da famfo, ana amfani da shi don haɗin bututun lanƙwasa, ana amfani da shi don canza alkiblar bututu.