Made of high-quality zinc alloy, the surface is polished, corrosion-resistant and not easy to break, rust-resistant, corrosion-resistant, and can be used for a longer time.Silicone suction cup, non-slip, wear-resistant, can better protect the board.Suitable for cabinets, kitchen tables, shelves, wardrobes, cabinets, wine cabinets, display racks, tables, etc.Size: 18.7xx13.1x5.4mm(0.53 x 077 x 0.59in)Screw size: 13.9mm (0.54in)Material:stainless steelcolour:SilverPackage Contents:30 x glass shelf support30 x screwOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.