Feature: 1. This terminal box with 2 mounting holes is designed for DIY applications, where a replacement of the original speaker board is required. 2. Simple installation, it 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. 3. Pure copper plated wiring terminal, beautiful and high quality, effectively avoid from corrosion and rustiness. 4. 3.8MM thicken base plate for reducing the resonance of wire box. 5. Wide compatibility, 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. Specification: Features: This terminal box with 2 mounting holes is designed for DIY applications, where a replacement of the original speaker board is required. Simple installation, it 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. Pure copper plated wiring terminal, beautiful and high quality, effectively avoid from corrosion and rustiness. 3.8MM thicken base plate for reducing the resonance of wire box. Wide compatibility, 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. Specifications: Color: Black Material: ABS Base + Copper Terminal Mounting Holes: 2 Base Plate Thickness: Approx. 3.8mm Screw Holes: Approx. 3.5mm Wiring Terminal Hole: Approx. 3.8mm Binding Post Diameter: Approx. 12mm Install Diameter: Approx. 48mm Size: Approx. 75 x 75 x 25mm / 3.0 x 3.0 x 1.0in Package Weight: 55g Package List: 1 x Speaker Terminal Box (Speaker is NOT included.) 1 x Screws Kit