Hoʻohana ʻo ia i ka ʻenehana hoʻoheheʻe kiʻekiʻe kiʻekiʻe, ka ʻenehana patent aupuni me nā lako mana alapine kiʻekiʻe e like me ke kumu wela e wela ai ke kaula kila, ka paipu kila i ka manawa like, e hana ʻo ia i kona welded pū ʻia.Loaʻa i kēia ʻenehana nā hiʻohiʻona e like me ke kiʻekiʻe o ka wela wela, ka nui o ka wela wela, ka lōʻihi o ka lawelawe ʻana, ka wela adaptation range, ke kiʻekiʻe kiʻekiʻe, etc.