HIGH QUALITY: The glass seal helps prevent rust, scratches and corrosion, ensuring quality and longevity. Design: Simple design, no frame required. The billboard can be fixed with screws. Wide use: Advertising nails are suitable for indoor or outdoor use, such as companies, offices, supermarkets, hotels, shops and billboards. Note: The data are all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.