His type of tie has work hardened helical blades that are designed to cut a spiral interlocking seating path into brick block or concrete as the tie is driven by a series of hammered impacts. A typical 9mm helical wall tie is installed into a tiny 6mm pilot hole thereby minimising disruption to the facade and to any insulating materials that might be in the cavity.  This tie is suitable for almost all situations and is the tie of choice where cavities are insulated, brickwork is perforated or where communal areas dictate the tie system should continue to fully function in the event of fire.

A fine pilot hole, having a diameter 3mm less than the diameter of the helical screw tie, is drilled through the near most leaf and into the subsequent leaf to a depth of 65-75mm.

An elongate driving shank of the twisted wall tie is inserted into the end of the tie adapter, which is in turn fitted to an SDS type roto-hammer drill.  The pointed end of the tie is aligned to the pilot hole.

The tie is driven rapidly into the masonry via a series of axial impacts imparted by the hammer drill.  The angle of the work-hardened fins force the helical tie to rotate as it cuts a spiral interlocking path into the masonry to provide a connection that does not rely on expansive stress or adhesion.