Fusion Tom Pack (10", 12", 14") 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. Exclusive Level 360 Technologycollar design ensures proper contact between drum head and drum shell. .