1.High quality glass standoff bracket screws, advertising nails, hardware bracket screws. 2.Stainless steel construction: rustproof, scratch-proof, oil-proof. Ensures quality and durability. 3.Through-the-wall style eliminates the need for a frame, allows screws to be attached through the sign and mounted to the wall for a clean, professional look. 4.Suitable for businesses, offices, shops, supermarkets, stores, art exhibitions, home, billboards and poster boards. 5.Package: 20pcs x glass standoffs, each glass standoff contains buffered silica gel which protects your glass.