Item Type: ShellModel Number: 44mm highpitch diaphragm high voice coilColor: silverPackage: NoMembrane Vibrating Material: Titanium Membrane 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:Impedance: 8Power: 50120 WMaterial: Copper Coated AluminumCylindrical Diagonal : 9.8cm3.86inBack Diagonal : 10.8cm4.25inOuter Circular Diameter: 7.2cm2.83inInner Circular Diameter: 4.5cm1.77in: 1 PCPackage includes:1 X 44mm highpitch diaphragm high voice coilOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is + 13cm.