Features: Make of Carbon Steel Galvanized, this product ensures long lasting durability in demanding conditions. The set of anchors and screw provides ample supply for multiple projects, very practical. This design of dry wall Screws improves stability and enhances the ability to support heavy loads dry wall screws and anchors. Suitable for many construction and engineering , it is versatile and ideal for professional and projects alike multi-use dry wall screws. Lght weight design, making it easy to install,great for on-the- anchors and screws for dry wall. Specifications: Component: Carbon Steel Galvanized Type: 6mm/8mm 6mm Model: Expansion Tube Size: About 30x6mm/1.18x0.24inch, Screw Size: About 30x4mm/1.18x0.16inch, Can Bear 15-20kg 8mm Model: Expansion Tube Size: About 32x8mm/1.26x0.32inch, Screw Size: About 35x5mm/1.38x0.20inch, Can Bear 20-25kg Package Includes: 50pcs Expansion Tube Tapping Screws note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.