3000 Series Bass Drum Pedals are newly upgraded with the Double-Chain Turbo Sprocket and come standard with the Two-Way 101 Beater. 3000 Bass Drum Pedals come in single and double pedal models, both with sturdy steel base plates Dual-Chain AcceleratorT Drive System Delta stroke adjustment with ball bearing and detachable spring Swivel toe-clamp Two-Way DW101 beaters with memory lock Steel base plates with anti-skid rubber mats and included drum key.