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The cordless TE 7-A rotary drill offers a 5/16- to 3/4-in.-diameter optimum drilling range, suitable for drilling anchor holes and through-holes, as well as light chiseling, in concrete and masonry.

Abstract: The rotary-percussive ultrasonic drill (RPUD) employs vibrations on two sides of a piezoelectric stack to drive a drill tool to achieve simultaneous rotary-percussive motion. It has the ...