The Lagmaster® Acoustical Plus is an upgraded version of the original Lagmaster®, featuring interchangeable plug-in heads for versatile application. The Lagmaster® A+ includes two heads: the LMP Wire Plug W (Welded), and LMP 1/4 Hex Plug. Install ceiling wire, or use the pole as an extended nut driver with the 1/4 Hex Plug.. The base plug also accepts all plugs used with the Lagmaster Plus & Purlin Master tool.