Features: 2 Way Speaker Box Terminals offer superior durability and impact resistance, making it for long use in both home and professional sound systems. from friendly ABS plastic and Coppers posts, this Terminals features seamlessly into various without taking up much space. for sound enthusiasts and professionals alike, this speaker Terminals to meet the needs of users who demand performances. for wide ranges of sound systems, including home theaters, music performances, and recording studios, ensuring application across different. With its gold plateds contacts for signal transmission, this binding post Connectors ensures clear sound output, reducing resonance with its 4mm thick base plate for enhanceds sound quality. Specifications: Materials: Plastic+Metal Diameter: 75mm/2.95 inches Opening: 49mm/1.93inch Package Includes: 1PC Speaker Junction Box note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid Due to the differences between different monitors, the picture may not reflect the actual of the item.