This is for a Vilex Cannulatted 2.0mm, 3.0mm, 4.0mm Dual Thread Titanium Screw System. REF # Z111 Screw Tray. Z255 – Screw Lifter. K11 – Wire Holder – QTY (2). “The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies.