Specifications: Color: Black Material: ABS Base + Copper Terminal Mounting Holes: 4 Base Plate Thickness: Approx. 3mm Screw Holes: Approx. 4.8mm Wiring Terminal Hole: Approx. 3.8mm Binding Post Diameter: Approx. 12mm Size: Approx. 96 x 122 x 36mm / 3.8 x 4.8 x 1.4in Package Weight: 121g Package List: 1 x Speaker Terminal Box (Speaker is NOT included.) 1 x Screws Kit Mounting Hole Design: This terminal box with 4 mounting holes is designed for DIY applications, where a replacement of the original speaker board is required. 3mm Thicken Bass Plate: The speaker box terminal is 3MM thicken base plate for reducing the resonance of wire box,the pure copper plated wiring terminal is used to install on the backside of the speaker as an amplifier. High Performance: Pure copper plated wiring terminal, beautiful and high quality,3MM thicken base plate for reducing the resonance of wire box,effectively avoid from corrosion and rustiness. Wide Compatibility: This 4 way speaker box terminal can be used to diameter below 5mm of cable, or Banana head plug, suitable for home, hotel, hall or the other places you want to set a speaker. Easy to Install: Simple installation, 4 copper binding post terminal is used to install on the backside of the speaker as an amplifier,support direct wiring, Y fork, straight banana head and bent banana head.