608 - Economical with double spring action $27.95 609 - Standard Chain Drive Double Spring $36.00 610 - Deluxe Heavy duty board, chain drive $62.50 611 - QuickSilver Super smooth,independent beater angle adjustment feature $71.95 614 - World Class Heavy Duty Non-slip clamp, chain drive $92.50 613D - Double Bass Drum Pedal -Super Deluxe, smooth and sensitive $234.95