Evans EC2 Tompack, Clear, Rock (10 inch, 12 inch, 16 inch) Rock Tom Pack (10", 12", 16") drum heads are made using two plies of 7mil film Two plies offer consistency and durability for longer playing time Exclusive Sound Shaping Technology (SST) provides the ideal amount of dampening tailored for each individually sized drum head Also available in a coated version with a unique translucent appearance All Evans drum heads are designed, engineered and manufactured in the USA