The PRO PLUG� SYSTEM is a superior and easy-to-install plug fastening system for PVC / composite decking and PVC trim. Drill and set each screw, then tap in the color-matched plug with a hammer for a smooth finish. Consists of two components: Fascia Plug Tool Set / Fascia Plug and Screw Kit. Fascia Plug Tool Set features Auto-Stop bit for setting ideal screw depth and creates perfectly sized holes for boards to expand and contract freely. Pre-drilling is required at 40 degrees Fahrenheit or below. We strongly recommend pre-drilling in all instances. Plugs are made from composite deck fascia material for a perfect match. Can be used with composite risers. Fascia Plug Tool Set sold separately. Not available for PVC Fascia systems.