The DI Series rough-in brackets were custom designed from the ground up to be the toughest easiest to use and most useful brackets in the industry. The "arms" are metal mesh and can easily be attached to wood or metal construction members using nails dry-wall screws or construction staples. The arms easily detach and can be positioned at various points around the bracket to accommodate unusual stud/joist locations. The center ring is heavy gauge steel that won't bend or break with rough handling and sloppy drywall cutting by subcontractors. The convenient wire tie loop is scored to allow easy snap off once the speaker is installed.