Features:* Our floating shelf brackets just released this improved bracket design for easytouse for casual DIY enthusiasts, along with the forgiveness and flexibility for any adjustments.* Our brackets are bundled in screws and plugs that help for easy intallation. The brackets are made of a Hardened Steel that can withstand heavy loads when installed properly.* Our bracket can help support deep shelves and when paired together with more brackets at closer intervals will ensure a long lasting and steady shelf,* The exterior is made of plastic and does not harm the planks and walls,securly to a backing material,a structural stud or a blocking. How to Install:1. Drill holes in the wall. The distance between the two holes is measured according to the length of the board.2. After drilling holes, insert the expansion kit to the wall.3. After inserting the end of the wall into the wall, twist the outside pole to make the end of the wall expand and lock, so as not to loosen. 4. Drilling holes into your board to hide the mounting bracket.5. Finally, just pull the bracket into the board. Specifications:The End in Wall Size: 12mm x 72mm/0.47" x 2.83"(D*L)The End in Wood Size: 12mm x 120mm/0.47" x 4.72"(D*L)Total Length: 192mm/7.56"Material: PP plastic, Hardened Steel Package Included:6 x Floating Shelf Bracket