Material: iron Specifications: 20x20mm Thickness: about 2.0mm Aperture: about 4.3mm 20 corner brackets You will receive 20 corner brackets. support angle black. The size of the corner bracket is 20x20mm or 0.78x0.78inch. High QualityThese L-shape right angle corner braces are made of steel premium quality stainless steel. They are waterproof, rust resistant and don't worry about daily scratches, corrosion and tarnishing. Safe DesignOval design to prevent scratches. Counterbore design, more beautiful after installing screws. The surface of the corner bracket is brushed, no burrs, avoid sticking hands. Creating more spaceRight angle brackets can be attached to the four corners of the space extra, then partitions or storage boxes can be placed and fixed. Wide ApplicationWorks great for book shelves, potted plants, stereo, table, desk reinforce a broom cupboard door, flat surface joints, seams and cracks. Help strengthen your bed frame, box, construction or repair of installed furniture. Note: This product does not include screws. Shipping Quantity: Twenty pieces