The Remo Powerstroke 3 ebony resonant bass drum head with 5" port hole features a thin underlay at the outer edge of the head to subtly dampen unwanted overtones. Ebony Powerstroke 3 heads are best known for use as a resonant bass drum head. This creates perfect balance of mid and low tones that has quickly made Powerstroke ebony 3 one of Remo's most preferred resonant bass drum heads.