Features: Make of Zincs alloy materials, which enhances the corrosion resistance, durability, and rusts resistance. The 2pcs concealed door hinge can support a 60kg door and can be opened and closed at angles of 180°. Adopts a 180° horizontal opening angles designs, which can silently open and close the door from multiple angles, reducing frictions, and improving service life. Suitable for wood door with a thickness of Greater than 38mm/1.50inch and a width of Less than 1000mm. Can be used for bedrooms, kitchens, living room, classrooms, hotel, offices, wood houses, shops, dormitories. Specifications: Materials: Zincs Alloy Color: Silver/Gold/Black Styles: Left opening/Right opening Size: As Shown in the Picture Package Includes: 1pc Door Hinges note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.