This Is A Brand New Aftermarket Diaphragm For P Audio: SD-990N Neodymium Driver Please Look And confirm The Diaphragm You Are Ordering Matches The Pictures Above & The Specs Below Specs: Overall Diameter: 5.1" (130 mm) Voice Coil Diameter: 3.9" (99.2 mm) Diaphragm Material: Titanium Nominal Impedance: 8 ohms Most Orders Placed Before 3PM and Paid thru PayPal Are Shipped The Same Day; Monday to Friday