This Is A Brand NEW Original Factory Genuine Replacement RCF M83, RCF N350, RCF ART300 Diaphragm 8 Ohm. Do Not Confused This Diaphragm With RCF ND350, CD350 Its Not The Same. Please Look And Confirm The Diaphragm You Are Ordering Matches The Pictures Above & The Specs Below. Most Orders Placed Before 3PM and Paid thru PayPal Are Shipped The Same Day; Monday to Friday.