High Quality: Glass spacer, brushed nickel, helps prevent rust, scratches and corrosion, ensuring quality and longevity Design: Simple design, no frame required Billboards can be fixed with screws Wide range of uses: The advertising nails are suitable for indoor or outdoor use, such as business, office, supermarket, hotel , stores and billboards Package includes: 20 glass spacers, 20 rubber spacers, 20 screws and 20 wall anchors 100% Service: If you have any questions about product quality, you can email us and we will be happy to solve the problem for you If you are not satisfied with the product, you can contact us and we will give you a satisfactory answer 20 Pcs Glass Spacer, Stainless Steel Wall Bracket for Advertising Nails, for Plaques and Display Stands of Sign Product specifications:Color: SilverMaterial: 202 stainless steel, screw iron, brushed nickel for surface treatmentSize 1: 12 x 25mmSize 2: 16 x 30mmDetailed size: as the picture shows How to install:1 Drill holes in your sign and make sure the hole size is correct 2 Mark the holes for your sign on the wall, make sure the sign will install in the correct place 3 Drive the screw anchor to the wall 4 Install the barrel on the wall 5 Put on the sign or glass and thread the stud to the bar Note:Please allow 1-3mm difference due to manual measurement, we appreciate sincerely for your kind understanding on this Package includes:20pcs Glass Standoffs20pcs Rubber Standoffs20pcs Screws20pcs Wall Anchors