IECHO hou BK4 oki nenoaiu mea no ka hookahi papa (kakaikahi papa) oki, hiki ke hana ma ke kaʻina 'akomi a pololei, e like me ka oki, milling, V groove, kaha, etc. Hiki ke hoʻohana nui 'ia i loko o ka 'oihana o automotive loko, hoʻolaha, nā lako a me ka composite, etc. ʻO ka ʻōnaehana ʻokiʻoki BK4, me kāna kikoʻī kiʻekiʻe a me ka maikaʻi, hāʻawi i nā ʻoki ʻoki ʻokiʻoki i nā ʻano ʻoihana like ʻole.