Package Includes: Double sockets and single sockets, wear-resistant black, suitable for fixing wooden slats on the bed frame. How to Use: Bed Slat Holders: Insert the boards into the end caps or center caps, align the cap pins with the mounting holes, and secure them to the bed frame. Function: The Side Slat Bracket attaches to the side and center support rails of your bed frame using two prongs that fit into pre-drilled holes, providing firm support. Wide Application: These slat caps are ideal as repair or replacement parts for metal, leather, wooden, day, and bunk beds. Material: 5.5 cm / 2.17 inches in size. The slat cap is made of new high-density plastic material, strong and durable. Specification: Material: Plastic Size: 5.5 cm / 2.17 inches Package Includes: Option 1: 12 Double Sockets 24 Single Sockets Option 2: 24 Double Sockets 48 Single Sockets Note: Please allow slight variations due to manual measurement and differences in monitor displays.