Made of 8mm thick tempered glass, which is anti-scratching; with polished edge to protect hands; much stronger than regular glass and has better resistance to impact strength and sudden heat/cold. Max load capacity is up to 9kg / 20lbs, safe for everyday use The 2-pack 240x240mm quarter round glass corner shelf designed with rail, can keep things from falling, help you make good use of all 90 degree wall corner space The wall-mounted floating glass corner shelves will save space and easily blend with your home decor in a modern simplistic style Comes with solid and rustproof aluminum rail & bracket kit for easy wall mounting (installing instruction included). You can choose the distance between the 2 tiers, or separately install in two places Organizing your stuff at the corner for handy to use or well display, great to install at shower corner or over the bathroom sink, also great for kitchen, balcony, living room, bedroom, office, restaurant or bar