Interchangeable Cam System (US.PAT.#6172291)4 Individual CamsChain Drive: Sprocket-less double chain drive provides silent, super smooth action with powerful and precise feel.Click-lock Spring AdjustmentControl Core Quad Beater (US.PAT.#5610351)
SUPVOX Drum Pedal Hammer Chain Double Bass Drum Kick Drum Bass Pedals Bass Drum Feet Double Bass Pedal Drum Springs Kick Pedal Electric Drum Pad Bass Drum Trigger Black Iron
Vaisoeny Double Bass Drum Pedal, Double Chain Double Bass Pedal, Double Kick Pedal for Bass Drum，Drum Set Kit and Electronic Drums (V-HT12)
Vaisoeny Double Bass Drum Pedal, Double Chain Bass Drum Pedal, Double Kick Pedal for Bass Drum，Drum Set Kit and Electronic Drums (V-SZ11)
Vaisoeny Double Bass Drum Pedal, Double Chain Double Bass Pedal, Double Kick Pedal for Bass Drum，Drum Set Kit and Electronic Drums (V-ST13)
Vaisoeny Double Bass Drum Pedal, Double Chain Double Bass Pedal, Double Kick Pedal for Bass Drum，Drum Set Kit and Electronic Drums (V-VZ14)
Vaisoeny Double Bass Drum Pedal, Double Chain Double Bass Pedal, Double Kick Pedal for Bass Drum，Drum Set Kit and Electronic Drums (V-JKC10)
