【Hidden Fixing Brackets】- Can be used for DIY or custom ledges, completely hidden in walls and boards, simple and fashionable, making your home more beautiful and orderly. 【Material】- The interior of the floating shelf bracket is made of iron, its housing and expansion tube are made of plastic.It is fine workmanship, sturdy and durable. 【Dimensions】- The total length is 175mm, the expansion tube length is 75mm, the diameter is Ø12mm and the support rod length is 100mm, the diameter is Ø10mm 【High Stability】- The support rod is a hexagonal cylinder with barbs, which increases the obstruction of the board and improves stability. 【Strong load-bearing】- The bearing capacity of the wall-mounted shelf bracket is very strong.If properly installed on a suitable fixed brick wall, the bracket can hold approximately 20kg.Product Description [Name]: Wall Mounted Hide Nail Brackets for Floating Shelves [Material]: Metal (Iron) + Plastic [Color]: Brown [Size]: Ø10mm x 100mm [Dimension]: Total length: 175mm Tube length dexpansion: 75mm, diameter: Ø12mm Support rod length: 100mm, diameter: Ø10mm [Package]: 6 x Hidden Floating Shelf Brackets The Board Bracket can support and fix all kinds of wall-mounted shelves, such as bookcases,display racks, garage shelves, decorative shelves, bathroom shelves, shoe shelves, etc.It can definitely satisfy your different DIY wall rack designs.Installation Steps: 1. First measure the hole spacing and drill the hole in the wall.The depth of the hole should not exceed 75 mm.2.Insert the expansion end of the bracket support pin into the hole in the wall, with the black screw cap on the end.3. Insert the support rod into the wall hole expansion plug.Once the end of the screw is properly contacted with the screw cap and tightened clockwise, continue rotating until the expansion plug in the wall expands tocompletely support the wall.4. Then drill the hole of the corresponding size on the side of the board (according to the hole spacing of the wall).5. Finally, insert the board into the board support rods.Note: 1. You need to prepare a 12mm drill bit for drilling holes in the wall and another 10mm drill bit for drilling holes in wood.2. Remember to place the central silver metal ring on one side of the expansion tube and embed it into the wall.3. Each board must have at least 2 supports