Standoff Screws: 20pcs 1/2 x 3/4 inch standoff nails. Diameter: 2/3 in. Base Length: 3/5 in. Cap Height: 1/8 in. Come with double spacers, plastic expansion tube and nail hardware. Material: Thickened body, stainless steel, wear-resistant and anti-scratch, strong load-bearing capacity. Lightweight and durable, adjustable screw cap, convenient and practical. Application: Mounted away from the wall for a nice 3D effect. A good choice for company, office, store, shops, bedroom, such as aluminum art prints, glass sign, acrylic sign, acrylic plate, acrylic picture frame indoor and outdoor advertising boards, photo. Perfect Craftsmanship: Double soft clear silicone grommet, gives protection against the bolt scraping against the sign material. Close fit, cushion rubber pad so that the screws with a better fit more difficult to fall off. Easy to Install: Install the plastic expansion tube on the wall and fix the standoff screw with screw. Brushed surface treatment, strong metallic texture, long-lasting bright surface, match the decor where they were placed. Product description Standoff Screws for Acrylic Frame Photo Wall Record good moments Children's growth process Standoff Screws for Door Sign Mark Glass sign Acrylic sign Acrylic plate Acrylic picture frame indoor Outdoor advertising boards Standoff Screws for Wall Company Office Meeting Room Supermarkets Store Shops Markets Washroom School Standoff Screws for Holding Glass Warm Tips: Screws require a screwdriver to assist the mounting of the standoff nails. Please keep away from children when handling.