Durable Material - Our shelf brackets are made of strong iron plated with nickel, which is not easy to break and sturdy. Heavy Duty - The maximum bearing of the brackets are up to about 20kg/44lb of a pair. Dimension - Total Length:3-inch/76mm; Rectangle Base Size:69mm/2.7" x 14.5mm/0.57" x 4mm/0.57"(L x W x T); Shank Dia:10mm/0.39" Space Saving- Completely invisible and hidden-Floating Shelf Bracket works perfectly to turn an old reclaimed barn beam into a floating shelf. Enhance the flexibility of space. Suitable for Various Scene - These floating shelf brackets suitable for living room, backdrop wall, bedroom, study, store, corridor, balcony and so on. Product Description Dimension Shank Dia:10mm/0.39" Total Length:3-inch/76mm Rectangle Base Size:69mm/2.7" x 14.5mm/0.57" x 4mm/0.57"(L x W x T) Please kindly see the second picture for more detail size. Weight Load About 20kg/44lb of a pair of bracket Package Content 4pcs x Hidden Bracket Mounting Screws and plastic anchors are included. Product Feature Completely Invisible and Hidden The Bracket is compeletely concealed after installed, which create shelves that appear to float on the wall and enhances the flexibility of space. Heavy Duty Made of heavy duty iron with nickel plating for better rust resistance. Suitable for Various Screens Suitable for living room, backdrop wall, bedroom, study, store, corridor, balcony and so on.