Features:This terminal box with 2 mounting holes isdesigned for DIY applications, where a replacement of the original speakerboard is required.Simple installation, it is used to installon the backside of the speaker as an amplifier. Pure copper plated wiring terminal, beautifuland high quality, effectively avoid from corrosion and rustiness.3MM thicken base plate for reducing theresonance of wire box.Wide compatibility, can be used to diameterbelow 5mm of cable, or Banana head plug, suitable for home, hotel, hall or theother places you want to set a speaker.Specifications:Color: BlackMaterial: ABS Base + Copper TerminalMounting Holes: 2Base Plate Thickness: Approx. 3mmScrew Holes: Approx. 4mmWiring Terminal Hole: Approx. 3.8mmBinding Post Diameter: Approx. 12mmSize: Approx. 80 x 80 x 38mm / 3.1 x 3.1 x1.5inPackage Weight: 67Package List:1 x Speaker Terminal Box (Speaker is NOTincluded.)1 x Screws Kit