Use the Flexi Storage Home Solutions Masonry and Timber Plugs & Screws to safely and securely affix your Flexi Storage Home Solutions Wall Strips and Hang Tracks to masonry walls or into timber stubs or walls. This pack contains 20 x masonry plugs and 20 x 6 gauge Phillips head screws.Use both the Plugs & Screws when installing into brick, stone or concrete; the Plug provides a material that can be screwed into and will hold the Screw firmly in place.When installing into Timber Walls or Studs, simply affix with the provided screws.