High Quality MaterialThe concealed floating shelf bracket is made of high quality iron inside and ABS plastic outside. the surface is smooth, sturdy and durable, and has a long service life. Strong bearing capacity is because the expansion tube is expanded by rotation and tightening, it is firmly supported and n; is not easy to loosen. and the plate bracket uses polyhedral design to prevent the plate from falling off, you don;t have to worry about the problem of falling. Hidden design the size of the floating shelf brackets is 10* 100mm, it is well hidden between the wall and the wooden board, there is no gap between the two. It can help you save more space and decorate your shelf perfectly. Save spaceIt can be perfectly hidden in walls and wooden planks without affecting the overall beauty of the room. simple and stylish, make your home more organized. It also saves a lot of space and is a very practical tool. Wide range of applicationsThe brackets are all hidden in wooden boards and walls, beautiful and compact. suitable for custom wall shelves, bookshelves or DIY furniture for homes and offices. Feature: - Made of metal in silver tone and plastic, widely used in home and offices. - Will not harm boards and walls, securely to backing material, structural post or blocking. - To make your brackets completely concealable, you can use a router to remove 15cm from the shelf, then it will be hidden, creating the desired floating effect. Specification: Material: metal ( iron)+plastic Size: 12*174MM Color: brown Quantity: 8 Product List: 8 * Concealed Shelf Bracket Tips: 1. You need to prepare a 12mm drill bit for drilling holes in the wall and another 10mm drill bit for drilling holes in the wood. 2. Remember to place the central silver metal ring on one side of the expansion tube and recess it into the wall. 3. Each board should have at least 2 invisible supports and be kept in the same horizontal position. Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and weather. display, there will be a certain color difference, the actual object received shall prevail.