He ʻoki ʻoki maʻamau ka ʻoki ʻoki a me kahi pahu kau e hoʻopaʻa ʻia me ka lima o ka scalpel. ʻO ka mea maʻamau i hana ʻia me ka titanium maʻemaʻe, titanium alloy, stainless steel a i ʻole carbon steel. I ka wehe ʻana, hoʻohana ʻia ka maka e ʻoki i ka ʻili a me ka ʻiʻo, hoʻohana ʻia ka piko e hoʻoponopono i nā kīʻaha koko a me nā aʻalolo, a hoʻohana ʻia ka ʻau no ka hoʻokaʻawale ʻana. E koho i ka pahi kūpono a me ka lima e like me ka nui o ka ʻeha. Ma muli o ke ʻano o ka ʻeha "zero" i nā ʻiʻo ma hope o ka ʻoki ʻana, hiki ke hoʻohana ʻia nā mea hana maʻamau i nā hana like ʻole, akā ʻo ka ʻeha ma hope o ka ʻoki ʻana e kahe ikaika ana, no laila pono e hoʻohana ʻia i nā hana me ka nui o ke koko.