The 8 in. Atlas bracket set in Silver is a beautiful shelf support that works well with either wooden or glass shelves up to 10 in. deep. Atlas is made of steel with rubber washers to protect your shelf finish. The Atlas is available in two sizes - 6 in. for shelves up to 8 in. deep and 8 in. for shelves up to 10 in. deep. 2-Finishes available silver or chrome. A unique Atlas feature is the ability to easily level your shelves during the installation process. The post support screw is off-set slightly so turning the post only a fraction will adjust the height of the shelf on that post's side. All screws are hidden once mounted for a clean and finished look.