10 PCS Steel Expansion Tube Pipe with Self-Tapping Screws Metal Wall Anchor Bolts thicken Expansion Screw

China. Sharp thread: The cross section of the screw is smooth and flat, with no residual burrs. Thickened material: Thickened material, not easy to age or rust. Anti loosening design: Strong tensile strength, anti loosening, not easy to break. Integrated molding process: Adopting integrated molding process, the panel has strong load-bearing capacity. Name: 10PCS steel expansion pipe self tapping screw serrated barbed metal fastener anchor bolt. Color: as shown in the figure. Material: Plain carbon steel. Surface process: Zinc plating with color. Specification: 6MM. Expansion tube 6MM 30MM. Screw 4MM 35MM. Product Features: Suitable for concrete, hollow walls, brick walls, plaster walls, wooden walls, etc. The main function is to fix screws. The metal screw anchor is easy to use, and when the screw is screwed in, the wall anchor will expand. The serrated shape makes the wall anchor more firmly fixed to the wall, so you don't have to worry about the screw loosening or falling off. Featur