The bututun ƙarfe nau’in matsa lamba ne, kuma ruwan dole ne ya kasance cikin matsi don yin aiki daidai. Wannan nau’ikan kayan haɗi na iya samar da madaidaicin-kusurwa mai cikakken-mazugi mai fesawa tare da kusurwar fesawa kusan 20 ° -40 °. Wannan kayan haɗin yana tallafawa gyare-gyare, don Allah tuntube mu.