The DFP-9500CL Left Foot Double Chain Drive Double Bass Drum Pedal features beater angle adjustment, smooth moving universal jount, one-handed spring tension adjustment lock system and a spring roller with built in bearings for smooth action. A patent pending Beater Shaft Rocker with teardrop shaft hole holds the shaft securely. Footboard angle adjustment is independent of the beater angle and a side hoop clamp allows for easy secure attachment to bass drum. Convertible to belt drive. Includes 2 two-sided beaters. Free Semi Hard case included.