Wall Dogs®:  

The Wall-Dog™ is an all steel, one piece, threaded fastener, which is used to fasten various fixtures directly to drywall. Wall-Dog™ fasteners are fast. Unlike conventional screw anchors, which require the secondary step of threading a sheet metal screw into an anchor, the Wall-Dog™ is installed directly through the fixture into the drywall.

Powers™ and Wall Dog™ are regisered trademarks of the Black & Decker Corporation.