Package includes: The package includes 20 hollow expansion screws; the size of these screws is M6*50MM; which can meet your needs. High quality: our hollow wall anchor is made of galvanized carbon steel; which has anti-rust and anti-corrosion functions; strong and durable; and is an indispensable tool for decoration. Installation steps: First drill a hole in the wall; then insert the hollow peg into the hole; hold the screw head with the tool; pull out the peg; and finally place the object and tighten the screw. Strong load-bearing capacity: specially heavy metal hollow gecko designed with heavy-duty screws; which can provide greater strength to bear the weight of heavy wall hangings. Wide range of applications: This wall anchor metal fixing tool kit is very suitable for fixing plasterboard; widely used in dry wall; hollow brick; plaster; tile ux of ceramic and very suitable for hanging curtain rods; lights; picture frames; coat racks; and power switches. Our wall anchors hollow are made of high quality galvanized carbon steel; which is rust and corrosion resistant; and durable enough to hang items. The heavy-duty hollow drive wall anchor will expand during installation; which provides high load-bearing capacity and security; and can be used with confidence Specifications: Material: Galvanized carbon steel Quantity: 20 pieces Size: (as shown in the picture) M6*50MM Packing list: 20 * Metal cavity anchor Features: 1. The quality is reinforced and the anchor wing in metal provides the maximum load capacity. 2. The surface is electroplated to prevent rust and corrosion. 3. Very suitable for fixing heavy objects to soft-lined partitions or plasterboard. 4. It can be secured in place by using spring loaded installation tools or by tightening and removing screws. Satisfactory service: If you have any questions; please feel free to contact us; we will respond to you in time and provide you with a satisfactory shopping experience.