The Tie-Wire Assembly Wire Attachment interfaces with DW2 and DW3 TOUGHWIRE™ Wire Locking Devices (sold separately). The wedge expansion anchor (sold separately) unites the TOUGHWIRE™ suspension system with the Tie-Wire Assembly Wire Attachment. Paired with a TOUGHWIRE™ Wire Locking Device, this wire attachment can be used to quickly suspend a variety of building services including HVAC, sheet metal, electrical, and plumbing/pipe applications.