Evans BD22GMAD 22 Inch GMAD Batter Clear DrumheadIf youre a heavy hitter looking for more life to your drumhead but prefer the feel, punch, and power of a single ply, the Evans GMAD is for you. Specifications Treatment: Clear Ply: 1 Thickness: 12mil Technology: EMAD Made using a single ply of 12mil film Externally Mounted Adjustable Damping system allows the player to adjust, attack, and focus Ideal for heavier hitters looking for a solid sound and more life to the head but prefer the feel of a