For effective dust extraction when drilling in dry materials. Includes a easily removable HEPA filter. Filter cleaning mechanism: When suction power decreases, dust can be removed from the filter using the cleaning device without the need to detach the dust box. Large dust container for longer operating time between cleaning cycles. Transparent dust box for quick monitoring of the fill level. Easily detachable dust box for quick and easy dust disposal. Depth limiter for precise depth adjustment. Double lock prevents accidental removal from the hammer drill. Power supply is automatically provided through the hammer drill.