02 U kusoshi Carbon Karfe/Bakin Karfe U Bolt DIN3570
U-bolt, hawan doki, sassan da ba daidai ba, saboda siffar U-dimbin yawa da suna, za a iya haɗa ƙarshen zaren guda biyu tare da goro, galibi ana amfani da su don gyara bututu kamar bututun ruwa ko flake kamar magudanar ruwa, saboda...