Features High-Quality Stainless Steel: Crafted from stainless steel, these screws offer high strength, resistance, and resistance, ensuring long-lasting performance and reliability. Screw Threads: Featuring high precision screw threads, these screws provide stable fixation and a longer service life, offering enhanced durability and security for your advertising sign or glass display. Buffer Rubber Circle: Each bolt is equipped with a buffer rubber circle to resist shaking, providing added stability and defence for your glass advertise board, shop sign, mirror, or show shelf. Easy to Use: Equipped with tapping screws, these fixing screws are easy to use, saving you time and effort during installation. Versatile Application: Widely used for fixing and supporting glass advertise boards, shop signs, mirrors, show shelves, and more, these screws offer a versatile solution for your advertising and glass fixing needs. Specification: Material: Stainless Steel Wright: 83-95g/2.9-3.4oz Size (diameter*length): 12*100mm/0.5*3.9inch; 12*120mm/0.5*4.7inch (Optional) Usage method: 1. Use a percussion drill to drill holes in a fixed position 2. Select a suitable expansion plug or wooden plug and insert it into the drilled hole 3. Screw off the decorative cap before fixing the advertising nail on the wall with self-tapping nails 4.According to the size, pore size and weight of advertising sign, use the appropriate self-tapping nail to fix the advertising nail. (The length, diameter and size of self-tapping nail should be considered.) Package List: 4 x Glass Standoff Pin 4 x Tapping Screw Package List