There is a huge variety of screws and wall plugs on the market, depending on the job at hand. From solid steel to brass and chromium, screws are manufactured in a range of metals, with galvanised rust proof screws being essential for outdoor use.
Wall plugs are an essential piece of kit when installing cabinets, mirrors or shelves to walls and are vital to ensuring a screw stays firmly in place. Without a wall plug, a normal screw would not stay in place when drilled into masonry or plasterboard walls. The wall plug expands and fits in to freshly drilled hole giving the screw a surface to grip to, and crucially, ensuring no damage is done to walls in the process.