100pcs Plasterboard Fixing Kits, Including 100pcs Butterfly Wall Plugs and 100pcs M8x50mm Metal Screws, The Wall Plugs Prevent the Screw from Rotating with the Drill Application: Suitable for various building materials, such as gypsum board and fiberboard, cavity ceiling and particle board, for curtains, lamps, cross stitch, picture frames, frames, ornaments, decorative pieces, etc. Unique Design: The butterfly design increases the fixing strength. When tightening the screw, the space in the ribbed anchor expands to two opposite sides. Easy to Install: Just a simple drilling, removable and reusable. First, drill a hole in the hollow wall, then turn the screw clockwise toward the expansion pipe until it can no longer be screwed in. Durable Material: Plastic anchors, using integrated molding process, lightweight and durable, not easy to break. High-hardness metal screws, rust resistance, durability and long service life.