The bututun ƙarfe shine nau’in matsa lamba, kuma ruwan dole ne ya kasance cikin matsi don yin aiki na al’ada. Wannan nau’ikan kayan haɗi na iya haifar da fentin fanka mai fesawa. Wannan kayan haɗin yana tallafawa gyare-gyare, don Allah tuntube mu.