Evans clear EMAD batter series features a 10mil of single-ply film providing an ideal balance of punch, power and low-end. The EMAD contains two interchangeable damping rings that maximize attack and low-end without removing the head or reaching inside the drum. The unparalleled industry standard externally mounted adjustable damping system allows the player to adjust attack and focus. 22" drum head made using a single ply of 10mil film Externally Mounted Adjustable Damping 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