Material: Carbon Steel, Zinc plated 11. Large Quantity Kit: If you need a large amount and long?term use of drywall anchors, our set can meet your needs, which contains drywall anchors and screws, special for gypsum board. 22. Durable Material: These drywall anchors are made of carbon steel, which has high hardness and can withstand great pressure. With yellow zinc plated on the surface enhances their corrosion resistance and extends their use and storage life. 33. Quick Installation: With this anchors, you can easily drive screws into drywall. The focus of these anchors is concentrated and can quickly break through the resistance of the drywall. They are also very strong and will not break after being driven into a screw. 44. No Damage: Thanks to the flat shape design of the anchors, they will not cause damage to the drywall. When you remove the screws and anchors, there will be no screw holes on the wall. Therefore, you can reuse or decorate the wall. 55. Wide range of applications: Designed for dry walls, this anchor helps you quickly install screws on dry walls. They can be used to hang objects on walls with a maximum hanging weight of 66 pounds.20pcs x Self Drilling Anchors Screws