Product information: - Product Name: Floating Shelf Brackets - Material: Iron - Thickness: 3 mm - Size: 100 x 80 mm / 3.94 x 3.15 inches. Package includes: 2 x wall shelf brackets. 8 x screws. Functions: - The invisible shelf bracket is made of high quality iron material, which is sturdy and durable. - The triangular design is enough to be stable. No need to worry about the shelf wobble or falling off. - The appearance is triangular. All shelves can be hung at the bottom of the shelf and hidden. - Ideal for bookcase brackets, cabinet brackets, furniture shelves, dividers and more. - Suitable for bedrooms, living rooms, balconies, dining rooms, offices, etc. Please note: - If you have any questions about using our metal shelf bracket, please feel free to contact us. We will definitely offer you a satisfactory solution.