Ⅰ. Rustproof: Brackets are constructed of type 304 premium grade stainless steel, with added 18/8 Chromium/Nickel content to protect against corrosion and rust, suitable for humid environments such as bathroom and kitchen. Ⅱ. Tempered Glass: 7-mm extra thick tempered glass, Safe use & kid-friendly. When broken, it will crumble into small granular chunks instead of splintering into the jagged shards as plate glass, unlikely to cause the injury. Ⅲ. Space Saving: All the bathroom toiletries such as shampoo, conditioner, liquid soap, and facial cleanser will get well organized and easy to be reached after using shower shelf. A great choice for small and limited bathroom spaces. Ⅳ. 2 Ways to Install: There are two installation methods for this glass shelf. The rail can be installed on the glass shelf to protect your toiletries from sliding off easily, and the rail also can be installed below the shelf to suspend towels as a towel bar. Ⅴ. Package Includes: 2 x 7MM- thick Tempered Glass with the Rail, 4 x Rustproof Stainless Steel Brackets, 1 x Hardware Pack, 1 x Installation Instruction. No need to purchase extra hardware. Make sure this fits by entering your model number.