Sonor Model DP 4000 S Chain Drive Double Bass Drum Pedal with Carry Bag. Hardware / Double Pedals / 400/4000-Series. Double Pedal, Double Chain, incl. Gearless tilters with comfortable metal handles for snare and cymbal adjustment, quick-release cymbal clamps and numerous adjustments on the pedals guarantee great functionality. 2-Segment clamps on all pipe connection distribute clamping forces evenly to increase the lifespan and usability. Additionally, the newly designed rubber feet – of course in a mallet design – cover a larger surface area to enhance stability. SKU: DP4000S – Manufacture: Sonor.