| 摘要 |
<p>The present invention relates to a rotary power tool having two rotary drive heads (14, 18) which are adapted to rotate about spaced generally parallel axes (20, 21), the drive heads (14, 18) being relatively positionable so that it is possible to select a respective one of the two drive heads (14, 18) to be located in a forward operational position as desired. <IMAGE></p> |
