Durable & Sturdy:Black corner braces are made of high quality stainless steel,hard and durable which is corrosion and rust resistance,stay for a long time. Easy to Install:The package are including 90 degree brackets and screws for you to choose to meet different needs,you just need to put the corner brace on the board you need to connect,screw the screws between the board and the corner code with a screwdriver. Corner Braces:4 holes L brackets 40 x 40mm;Angle bracket in 2 holes:20 x 20mm.The screws can match prefect for these corner brackets. Wide Applications:The l corner braces are perfect for reinforcing right angle corner joints,can be applied in many different places such as shelf support for desk edge,flat surface joints,windows,furniture etc. Specification: Color:Black. Material:stainless steel. Package Include: 20 x L corner braces in 4 holes. 20 x 90 degree brackets in 2 holes. 120 x screw matched in these braces. Smooth surface plated with color no easy to fade,no need to worried about scratching. Simple & practical design can match the most situation where you need the corner braces will not looked colors clashed. Only 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.