Kau ʻia nā ʻōpala ʻōpala ʻoihana, hoʻolālā pahu pālua, hoʻokaʻawale ʻōpala.Hana ʻia ia me ke kila galvanized kiʻekiʻe a mālama ʻia kona ʻili e ka hoʻoheheʻe ʻana i waho, ʻo ia ka palaka a me ka corrosion-resistant.
He kūpono no nā papahana alanui, nā pāka municipal, i waho, nā ʻāpana, ke kaiāulu, ke alanui, nā kula a me nā wahi ākea ʻē aʻe.
He maʻalahi ka hoʻolālā hiʻohiʻona o ka pahu pahu pahu metala, a hiki ke hoʻololi ʻia ke kala a me ka nui e like me kou makemake.