This is from the 1990's. Half of the Gibraltar linkage was missing so it's all been replaced but the remaining half is included (see pics). The beaters have been replaced with DW ones.
Gibraltar 6711S Single Kick Pedal
Twin Drum Pedal Double Bass Drum Pedal Two Chain Double Kick Drum Pedal for Jazz
Gibraltar 6000 Double Tom Stand
Roland Heavy Duty Double Kick Pedal
Tana Iron Cobra Double Kick Drum Pedal Percussion Instrument Accessory
Pearl P-122TW Double Kick Pedal
