The Powers Fasteners Wall Dog is a one-piece screw anchor that works in all base materials, and it features high-profile threads for easy fastening into wallboard. Its deep cutting, corkscrew-like threads provide for a powerful hold and smooth entry, and when removed, the 1/4" diameter Wall Dog leaves a much smaller hole than toggles or other wallboard systems. The all-steel Wall Dog is available in two finishes, white and chrome, and two head styles, pan and oval. No pre-drilling is required when fastening into drywall or wood, and the anchor is installed with a Phillips-head screwdriver. Powers Fasteners.