Descriptions: Product Name: 46 Black Aluminium Bass CoilVoice coil inner diameter: 46mmDiaphragm material: Black aluminium skeletonCoil material: round copper wireNominal impedance: approx. 8 ohms (Ω)Measured DC impedance. Approx. 7 ohms (Ω)Power: Different power depending on the magnetMounting dimensions: actual measurements on the rightTotal height of skeleton: 50mmCopper wire height: approx. 16mm Package include: According to your choice. Payment: PayPal, PayPal Credit, MasterCard, Apple Pay, Google Pay...are all supported. Shipping: Please make sure your address 100% right. Return Policy: If you are not satisfied with the item,any problem,please contact with us before you give a negative feedback,because it doesn't help you at all.we will try our best to help you solve the problems. Feedback: Your satisfaction is very important for us.If you are satisfied with our item or service,please give us a positive feedback and 5-Star DSRs rating. Contact Us: We are very glad to help you,please feel free to contact us whatever any problems.Due to high volume of daily incoming emails and time zone difference,please allow 24 hours for us to reply. About Item: For the funcitonal products in our shop,we make sure that the functions are the same as description,but the actual color and shape may looks a little different from pictures because of the technical improvement and manufacturing variance.Please be advised before you bid.