The EC2 Clear Drumhead Tom Packs feature a Sound Shaping Technology and an Edge Control ring mounted underneath two plies of 7mil film. By controlling edge vibration (instead of eliminating it), the ring isolates and damps higher overtones, enhancing low-end and attack, and enabling a broader tuning range. EC2 SST Clear Rock Tom Pack - (10+12+16") Get yours today; with the Sam Ash Direct 45/60day return/ price protection policy, we assure the best price and a fast, free delivery.