Evans 20" EQ3 Batter Clear Drum Head EQ3 Clear Bass Batter Drumhead EVANS EQ3 Clear Bass Batter Drumhead, 18 Inch EQ3 Clear bass drumheads boast a controlled low-end rumble with and focused attack, great for live playing and heavy hitters. EQ3 Clear heads feature two plies of 6.5mil film and an internal overtone control ring to deliver articulation and endurance that will boost your sound. Overall, this bass batter has moderate attack, sustain, and brightness with above average durability. This drumhead also features Level 360 Technology. Read More Evans EQ3 bass head is made with two plies of 6.5mil film and an internal overtone control ring. EQ3 Clear provides a controlled low-end rumble and focused attack. Great for live playing and heavy hitters. All Evans drumheads feature Level 360 Technology to provide ease of tuning, extended pitch range, and optimum quality of sound. Evans drumheads are designed, engineered, and manufactured in the USA.