Flextone Thunder Shaker Gobble Turkey Call Black. No need to waste time practicing with difficult mouth and diaphragm calls; anyone can master this call in mere seconds. Simply shake the bellows for instant realistic gobbles. The compact size stows easily. Specifications for Flextone Thunder Shaker Gobble Turkey Call: Manufacturer: Flextone Color: Black Package Contents: Flextone Thunder Shaker Gobble Turkey Call Flextone FLXTK136: Thunder Shaker Gobble Turkey Call Black