ʻO ke kila kila ka mea maʻamau i hana ʻia me ke kila kalapona, a ʻo ka ʻili he wela wela, hiki ke pale i ka oxidation.Hiki ke hana ʻia me ke kila kila.ʻO ka pahu kila he ventilation, kukui, wela wela, anti-skid, explosion-proof a me nā waiwai ʻē aʻe.