High Quality Materials: These nuts are made of corrosion resistant 304 stainless steel. The seal is made of high quality copper and soft rubber, which has locking and non-slip effect. Special Design: The cover covers the exposed screws, which is very beautiful, moisture-proof, rust-proof, oil-proof, and not easy to deform after long-term use. It is also easy to clean. Easy to Install: The installation method of this stainless steel mirror nail is very simple. Just drill a 5mm hole in the glass, install the soft plastic washer and the copper washer in turn, tighten the screws, and finally install the stainless steel nut. Wide Range of Applications: Widely used in wood or glass furniture such as mirrors, coffee tables, bathroom panels, cabinets, glass signs, etc. Material: 304 Stainless Steel Size: 19MM Quantity: 12 Pieces Color: Black Features: 1. These mirror screws are made of sturdy stainless steel, and the surface is brushed, waterproof and rustproof. 2. This stainless steel mirror nail uses thickened screws. It is durable, not easy to deform and break. 3. The nut perfectly covers the exposed screw. The black appearance and the brushed surface make the screws more beautiful and make the mirror more elegant. 4. These decorative nail covers are widely used in mirrors, coffee tables, bathroom panels, cabinets, glass signs and other wood or glass furniture.