Ko te 1/2 in(13mm) te tere hurihuri hammer hammer drill he mea hangai mo te whakamahi roa, rua-mode hammer drill mo te rakau, te rino, te masonry ranei, he taputapu pai mo te whakamahi ngaio. ki te miihini, ka eke te tere hurihanga ki te 3000RPM, e kii ana he pai te mahi keri.