Evans EMAD 2 Clear Batter Bass Drum Head 18 in.

Featuring an outer 7-mil ply, plus an inner ply of 10-mil, the EVANS EMAD 2 series provides you with enhanced attack, focus and durability thanks to the industry standard EMAD (Externally Mounted Adjustable Damping) system. With the included damping rings, the user can change the amount of ring in seconds to maximize attack and low end. This is a 2-ply head.