Hana ʻia nā ʻāpana Drill ma nā metric nui mai 6mm a 25mm a me nā ʻīniha ākea mai ka 1/4 ″ a i 1 ″.
Ke hoʻohālikelike ʻia me nā ʻano ʻano drill bit ʻē aʻe, hiki ke noʻonoʻo ʻia ka lōʻihi o ka drill bits. ʻO 200 mm (8 iniha) ka lōʻihi o ka bit drill pōkole loa. ʻO 600mm ka lōʻihi loa, ʻo ia ka 24 iniha a i ʻole 2 kapuaʻi! Hiki iā lākou ke hoʻohana maʻalahi no ka wili ʻana i nā studs o ka paia, nā ʻōpala a i ʻole nā ʻāpana lāʻau mānoanoa.
ʻOi aku ka nui aʻe o nā ʻāpana wili lepo a me ka hau. ʻO nā ʻoki liʻiliʻi o kēia ʻano he 150 mm (6 in) ke anawaena a he 800 mm (31 in) ka lōʻihi.
E like me nā ʻano ʻāpana drill ʻē aʻe, loaʻa nā bit drill ma ke ʻano "pōkole" me ka lōʻihi holoʻokoʻa he 100-120 mm (4-4¾ iniha). He mea pono kēia mau ʻāpana pōkole no ka ʻeli ʻana i nā lua ma nā wahi ʻoi aku ka paʻa, e like me ka hana ʻana i nā lua o nā kaola hale.
