ʻO ke kumu kūʻai haʻahaʻa 360mm step drag bit 3 mau pahi no ka hoʻokumu paʻakikī

ʻO ka PDC Drag Bit 3 Blades nui no ka ʻeli ʻana i ka lua wai ʻo Hard Rock ma ka waihona mai ka mea hoʻolako Kina.
ʻO ka PDC drag bit kahi ʻāpana wili piha, i hoʻohana nui ʻia no ka wili ʻana i nā lua wai, ka eli ʻana, ka geothermal, ke kaiapuni a me ka ʻimi ʻana. He kūpono ia no ka wili ʻana i nā ʻano palupalu a me ka palupalu-waena me ka wikiwiki o ke komo ʻana a me ka pono kiʻekiʻe, a kūikawā no ka wili ʻana i nā lua nui.