1. Made of high quality zinc alloy material, good abrasion resistance, long service life, high hardness, wear resistance, corrosion resistance. 2. Smooth surface and pleasant feeling. Rounded edge, fits perfectly into your folding table and the holes are aligned. 3. Release the friction resistance of the switch door lock, get the silent effect, stronger and more durable. 4. Strong, soft, simple, longer life, no hole opening, easy installation. Is a good helper in life and at work. 5. Suitable for many surfaces such as computer desk, sewing machine, windows, doors and folding table, etc. Product description Description: High quality zinc alloy, anti-corrosion coating, stable and durable. No deformation, non-toxic and tasteless, not easy to rust, it does not harm people's body. The sophisticated appearance enhances its beauty. Features: Color: silver Size: 30 x 78 mm Material: zinc alloy Package included: 3 x folding table hinges