He mea hanga te karāpeti horihori mai i ngā kōka kounga teitei mā te whakapūtanga porowhita hou me te whakaurunga o ngā pore nano. Ki te whakatauritea ki te karāpeti maori, kua whakaaturia te karāpeti horihori he nui ake te mātotoru o te pūngao, he roa ake te mau o te huringa, ā, he iti ake te whānui i te pāmahana teitei.