Aquarian Regulator Black Ported Bass Drumhead, 22″

Aquarian RSM22-BK 22″ Regulator Black Ported 4.25 Bass Drumhead: Aquarian Regulator 22″ Bass Drum Resonant Head Features: A good match for “scooped” modern batter heads Goes great with the Aquarian Super-Kick and Impact 10-mil, single ply Powerful bass Thick low-midrange Internal muffling system damps unwanted overtones 4-3/4″ offset hole dries out the sound, provides mic access.