Whakaritea hei whakamahi mō ngā tono iti-āhua, ko ō tāhuhu 3/8" e tuku nei tāhuhu matatika ki te whakarerekē i ngā tohu tāhuhu i roto i tētahi rima iti. He pai ki te whakatika i ngā mahi whakatikatika motokā, whakahaere pīhau, ā, me ngā mahi itiiti o ngā kōmene, kei aua tāhuhu he kōmene kawe pai me ngā kaupapa tāhuhu mōhiohio hei whakatika i ngā tohu. Ko te kahu hangarite e whakaitinitini ana i te mate ringaringa, nō reira ko te upoko whakaarahia e taea ana te whakamahi i roto i ngā wāhi tirotiro. I whakatakotoria ngā tāhuhu nei ki ngā paerewa ā-wāhanga, e mana ai te whakatutuki pai o te whakatika mō ngā pūkenga me ngā hunga whakatikatika.