These are some standoff screws using Aluminum Alloy materials, can withstand long term using without being easily . An excellent standoff screw that can bring you convenience, allowing you to have comfortable experience, suitable for most advertising signs. Features -Color:Silver -Material:Aluminum Alloy -Size:5.00X0.80X0.80cm/1.97X0.31X0.31in(long section) -Size:2.00X0.80X0.80cm/0.79X0.31X0.31in(short section) -Size:6.00X0.80X0.80cm/2.36X0.31X0.31in(whole size) -Note: thread: -These advertising screws are made of sturdy material, smooth surface, ensuring long-term use without scratches. -Lightweight and easy-to-use design, easy to carry, easy to store and transport. -Practical and multi-purpose, can be used in offices, supermarkets, shops, markets, glass frame cabinets, boutique billboards, etc. - craftsmanship, reasonable structure, practical and convenient to use. -These advertising screws can be used to hang mirrors, advertising boards, photo frames, and other items, meeting your requirements well. Package list: 10 x standoff screws