Anti-rust: The toilet seat and toilet paper holder are made of high quality SUS304 stainless steel to prevent corrosion and rust. Ideal for humid environments such as bathrooms and kitchens. Anti-rotation: The toilet paper holder wall bracket has a unique slot design, and the screws on the bracket are tightened to prevent rotation. No shaking or falling! Take advantage of this sturdy design. Easy to install: you can use the screws and dowels that come with the package (drilling size: 6 mm). The screws are made of SUS304 stainless steel and will not rust. maximum. Load: 5KG screw mounted on solid concrete wall. Matte Black Finish: A high quality matte black finish adds a modern, minimalist look to your home while preventing daily scratches, corrosion and tarnishing. Includes all hardware and installation instructions: 1 towel ring, 1 toilet paper holder, 1 hardware bag (for screw-in installation), installation instructions, two hooks.