18" DRUM HEAD MADE USING A SINGLE PLY OF 10MIL FILM. EXTERNALLY MOUNTED ADJUSTABLE DAMPING (EMAD) SYSTEM ALLOWS THE PLAYER TO ADJUST ATTACK AND FOCUS. EXTERNALLY MOUNTED ADJUSTABLE DAMPING (EMAD) SYSTEM ALLOWS THE PLAYER TO ADJUST ATTACK AND FOCUS. VERY VERSATILE HEAD FOR ALL MUSIC GENRES; A TRUE WORKING DRUMMER'S CHOICE. ALSO AVAILABLE IN A COATED VERSION. ALL EVANS DRUM HEADS ARE DESIGNED, ENGINEERED AND MANUFACTURED IN THE USA.