Premium Material: The expansion wall plug is made of high-quality PP material with good flexibility, whiich is not easy to break. The self-tapping screws are made of high-strength carbon steel, which is corrosion resistance, and oxidation resistance, durable for long time use. Easy to Use: Just use a drill to drill holes at the marked points, then hammer the wall anchor into the hole, place the fixing parts, and finally use a screwdriver to screw the self-tapping screw into the wall anchor for fixing. Practical Design: The split in the ribbed wall anchors adopt an expansion curve design, will expand on two opposing sides as you tightening the screw, which greatly enhances the anchoring force, prevent the wall anchor from turning in the hole. Wide Applications: Suitable for haging installing and fixing hardware, kitchen tools, electrical equipment, shelves, lamps, mirrors, photo frames, curtains, TV brackets, hooks, etc. Ideal for the garden, home and office appliance, etc. Package Includes: You will get 55 pcs yellow extension wall plugs and 55 pcs matching self-tapping screws, 3 sizes of M6x30 mm or M6x40 mm or M8x40 mm. Can be used for solid bricks, concrete, lime-sand bricks, high-pored bricks, and other wall materials.