General description Concealed Floating Shelf Bracket set includes 6 pieces of heavy-duty invisible brackets designed for custom wall shelves. These brackets are completely hidden within the walls and boards, providing a simple and stylish solution to enhance the aesthetics of your home while ensuring stability and strength. Technical specifications Total length: 175 mm Expansion tube length: 75 mm Expansion tube diameter: Ø12 mm Support rod length: 100 mm Support rod diameter: Ø10 mm Load capacity: Supports approximately 20 kg when properly installed on a solid wall Material: Iron interior with plastic housing and expansion tube Installation Measure the hole spacing and drill holes in the wall (depth should not exceed 75 mm). Insert the extension end of the bracket support pin into the wall hole along with the black screw cap. Insert the handrail into the expansion plug in the wall opening and tighten the screw cap until the expansion plug fully supports the wall. Drill the