Exquisite plate surfaceThe glass spacer is surface-treated by wire drawing, and the metal structure is strong, which can ensure long-lasting brightness, abrasion resistance, oil resistance, antifouling and a smooth, shiny surface.PACKAGING The packaging contains 20 glass spacers as well as 20 fixing screws and rubber plugs. Each glass spacer has two silicone buffer pads that can protect the glass. Glass accessory joint size is 19 x 25mm, nut depth is 18mm, screw head thickness is 5mm, screw thread length is 18 mm and the screw thread diameter is 10 mm. The thickness that can be tightened is 0-10mm.MATERIAL Our advertising screws are made of high quality stainless steel, rust-proof, wear-resistant, corrosion-resistant, scratches, durable and the surface is very smooth and beautiful. You can use it for a long time without having to replace it and dont worry about it aging or rusting.EASY TO INSTALLInstalling the shield spacers is very easy and quick , you need to fix the expansion pipe on a solid wall or wooden board first, then the bottom of the advertising nail is fixed on the wall with screws, then put on the glass window, finally tighten the screws, everything is done !WIDE APPLICATIONS These wall spacer screws are suitable for fixing billboards, billboards, building boards, glass, photos, etc. These spacers can be used indoors and outdoors. They are ideal for offices, libraries, bulletin boards, private homes, hotels, shops, supermarkets, exhibition halls, art galleries, etc.