The Evans EMAD series features a single ply of 10mm film providing an ideal balance of punch, power and low-end. This 16 inch head features the unparalleled industry standard Externally Mounted Adjustable Damping (EMAD) system. This allows the player to adjust attack and focus without removing the drumhead. A foam ring around the outside edge of the head can be adjusted to control sustain and tone. Evans EMAD Clear bass drum heads are available in sizes 16-26 inch.