Wall plugs, also known as anchors or dowels, are small devices used to secure screws in walls. They provide a stable grip in materials like drywall, brick, or concrete, preventing screws from pulling out. Wall plugs come in various sizes and types, designed for different wall materials and load capacities. To use a wall plug, a hole is drilled into the wall, and the plug is inserted. Once in place, a screw is driven into the plug, expanding it and creating a tight fit. This allows for the safe mounting of items like shelves, pictures, or light fixtures.