Installation Made Simple: The package includes 40 pieces of 10 mm brass hinges, complete with a roller rail design for a smooth and silent operation. Installation is straightforward-simply drill a hole and insert the hinge. Functional Design: These hinges feature a 180-degree opening angle, allowing for a wide range of motion from 0 to 180 degrees. The concealed design ensures that the hinges remain from both sides, maintaining the aesthetic integrity of your project. Dimensions & Compatibility: Each hinge measures 22.5 mm in height and 10 mm in base diameter when folded. The opening between two unfolded hinges is 5.8 mm. compatibility with your project. Premium Material Construction: Crafted from high-quality polished brass, these hinges are not only aesthetically pleasing with their shiny finish but also boast durability and rust resistance. Their robust construction ensures a strong load-bearing capacity. Versatile Applications: Ideal for a variety of projects including jewelry boxes, folding tables, cabinet doors, and other small furniture. These hinges are also suitable for use on wood, plastic, and thick glass materials, though not recommended for heavy-duty applications., Weight: 0.881849048 Pounds, Manufacturer: Wesafrae