3M DBI SALA Mobi-Lok Aviation Vacuum Anchor Secondary Pad 22001273M DBI SALA Vacuum Anchor System allows the user to anchor to virtually any smooth, non porous surface simply by flipping a switch and waiting for the green light. So whether they need to repair an aircraft or repaint a section on a water tower, theyll always be able to quickly, and easily put themselves where they need to bewithout putting themselves in danger. Provides tie off fall protection anchor point on smooth, non porous surfaces via vacuum