Our 10 mil, single-ply heads come standard on resonant-sides of all Collector's and Performance Series drums; however they can also be used as batter heads. Clear Dupont S film and a crimped aluminum flesh hoop offer superior resonance and durability and Remo USA technology insures consistency. Bass drums feature Remo's standard, glued-channel aluminum flesh hoop that provides maximum vibration and durability, featuring exclusive DW Microvents™ for optimal resonance.