The Wall-Dog™ is an all steel, one piece, threaded anchorless screw, which fastens various fixtures directly to drywall, plywood, concrete, hollow or grout filled block, brick and plaster. The Hangman Products Wall-Dog™ 6-Pack is a great way to buy this amazing anchorless screw. No anchors or toggles. How many toggles have you lost to the bottom of various walls? With Wall-Dog™ those days are over. Wall-Dog™ installs quickly and easily with a Phillips screwdriver. Its patented thread design allows a Wall-Dog™ to enter a 3/16" hole producing a one step anchor with superior holding capabilities.