ʻO kā mākou mau ʻimi mau ʻo ke ʻano o ka "noʻonoʻo i ka mākeke, mālama i ka hana maʻamau, mālama i ka ʻepekema" a me ke kumumanaʻo o "ka maikaʻi ke kumu, ka manaʻoʻiʻo i ka mua a me ka hoʻokele ʻana i ka holomua" no Rock Bits,Hoʻohana ʻia nā ʻāpana wili, Tricone Roller Drill Bit, Hoʻohana ʻia ʻo Tricon Drill Bit,17 1/2" ʻAi ʻAi ʻAla ʻAla.Inā ʻoe e ʻimi nei i ka maikaʻi maikaʻi ma ke kumukūʻai maikaʻi a me ka hāʻawi manawa.E hoʻokaʻaʻike mai iā mākou.E hoʻolako ka huahana i nā wahi āpau o ka honua, e like me ʻEulopa, ʻAmelika, Australia, Johor, ʻAmelika, Helene, Seychelles. Loaʻa iā mākou nā lā kūʻai pūnaewele āpau e hōʻoia i ka lawelawe ma mua o ke kūʻai aku a ma hope o ke kūʻai aku.Me kēia mau kākoʻo āpau, hiki iā mākou ke lawelawe i kēlā me kēia mea kūʻai aku me ka huahana maikaʻi a me ka hoʻouna ʻana i ka manawa me ke kuleana nui.Ma ke ʻano he ʻoihana ʻōpio e ulu nei, ʻaʻole paha mākou ka mea maikaʻi loa, akā ke hoʻāʻo nei mākou i ka mea maikaʻi loa e lilo i hoa maikaʻi.