Evans EMAD™ series of bass drumheads have set a new standard in solid bass drum tones that have the best mix of strength, durability, musicality and tone. Featuring a single ply of 10 mil film with Coated Texture, providing an ideal balance of attack, low-frequency response & durability. The unparalleled industry standard Externally Mounted Adjustable Damping (EMAD) system allows the player to adjust attack and focus. If you're looking for the maximum punch from your kick drum then look no further, the Evans EMAD punches above it's class! OXYGEN MUSIC is proud to stock a huge range of Evans drumheads including the Emad 20 Inch Coated Bass Drum Head. BD20EMADCW