Evans B15EC2 15" EC2 Coated Drum Head The EC2 features an Edge Control ring mounted underneath two piles of 7mil film. By controlling edge vibration (instead of eliminating it) the ring isolates and damps higher overtones, enhancing low-end and attack, and enabing broader tuning range. The coating adds additional warmth, focus and depth Packaging shows signs of wear There are some marks on the drum head - please see pictures.