General description These 4pcs Brass Invisible Hidden Barrel Hinges are designed for various applications including jewelry boxes, folding tables, cabinet doors, crafts, wine boxes, and small furniture. They are not recommended for heavy-duty load-bearing projects. Technical specifications Material: Sturdy brass Diameter: 10mm / 0.39 inch Opening angle: 180° Installation Easy installation with a roller guide rail design for smooth and quiet operation. Built-in screws help to secure the hinge in place. Simply drill and insert the hinge to complete the installation. Usage Ideal for use in jewelry boxes, folding tables, cabinet doors, crafts, wine boxes, and small furniture. Provides a hidden hinge design that is completely invisible on both sides when installed. Other information Note: Manual measurement may allow for a 1-3cm error. Color may vary due to lighting and screen differences.