This level is reserved for the ‘Big Dog’ on the job site! A heavy-duty aluminum frame houses industrial strength acrylic block vials and is finished with Super Shock^® end caps made from a special polymer & rubber blend. These levels feature the exclusive Swanson Diamond™ bumpers, to protect surfaces from marring. Multi-ring vials will help plumbers and industrial landscapers with drainage pitch, and the magnetic version of these levels are the envy of metal workers everywhere.