Description: Features: 100% brand new and high quality. It is voice coil for audio professional tweeter speakers. 44 core treble titanium film. Lightweight and portable. As tweeter speakers accessory. Specifications: Item Type: 44mm high-pitch diaphragm high voice coil Impedance: 8? Power: 50-120 W Coil Material: Copper Coated Aluminum Membrane Vibrating Material: Imported Titanium Membrane Color: Sliver Szie: (approx) Cylindrical Diagonal Line: 9.8cm/3.86in Back Diagonal Line: 10.8cm/4.25in Outer Circular Diameter: 7.2cm/2.83in Inner Circular Diameter: 4.5cm/1.77in Quantity: 1 PC (other accessories demo in the picture is not included)