275 pieces of 4x30mm pan head screws This is a box of drill screws called "Pierce Vis." This product has the following features: Product Name and Manufacturer: "Pierce Vis" is a drill screw developed by Pierce Sales Co., Ltd. and manufactured by Shinjo Seisakusho Co., Ltd. Features: The tip is a drill, so it can drill holes, form threads, and fasten in one step without pre-drilling. Applications: It is a versatile type used in various applications such as installing signs, aluminum sashes, corrugated sheets, and gypsum boards. Quality: It is subject to strict quality control comparable to automotive parts, boasting stable sharpness and head-stripping strength. Please make your judgment by looking at the photos carefully. Thank you for viewing. Management Number: D-82