Evans™ EQ3™ Resonant No Port drumhead series features a single ply of 6.5mil film with a 10mil internal overtone control ring. Made with a single ply of 6.5mil film Microphone friendly, from the studio to arena No mic port Available in a smooth black, onyx, smooth white, and coated white version.. EVANS drumheads are designed, engineered, and manufactured in the USA.