It is widely used in the industry The packaging includes 500pcs Tapping Drilling Screws, enough quantity to meet your needs Used when constructing Drywalls track, plasterboard, metal sheets, wood Flat head ensures a strong connection and resistance to head breakage, fine thread gives great and high pull-out resistance Sharply point for easy penetration Perfect for constructions, plasterboard, plasters wall, wood panel, stair and other indoor applications, patios and various wood joints Make from zincs Iron materials, it have good strength and resistance, Manufacturer: YanFengPro