GB Pae Poʻai maʻamauhe ʻano koʻokoʻo metala i hana ʻia mai ke kila kalapona, ʻo ia hoʻi ka huila o ka hao a me ke kalapona. Loaʻa nā pahu kila kalapona i nā ʻano like ʻole a me nā nui, e like me ka poepoe, square, flat, a hexagonal, a hoʻohana mau ʻia lākou i ke kūkulu ʻana, ka hana ʻana, a me nā noi ʻoihana. He kiʻekiʻe ka ikaika tensile o kēia mau pahu a ʻike ʻia no ko lākou kūpaʻa a me ke kūpaʻa ʻana i ka corrosion, e kūpono ai lākou no nā ʻano hana like ʻole.