ʻO ka 1/2 in(13mm) variable speed corded hammer drill he māmā wili kaula i kūkulu ʻia no ka hoʻohana lōʻihi ʻia, ʻelua-mode hammer drill no ka lāʻau, kila a i ʻole nā mea hana masonry, kahi mea hana kūpono no ka hoʻohana ʻoihana. i ka mīkini, hiki i ka wikiwiki o ka hoʻololi ʻana a hiki i 3000RPM, e hoʻohiki ana i kahi hana wili maikaʻi.