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×	Mini Hot Air Stirling Engine Single Cylinder Engine Motor Model STEM Educational Toy - Enginediy	$20.99	Mini Hot Air Stirling Engine Single Cylinder Engine Motor Model STEM Educational Toy - Enginediy quantity	$20.99
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×	Low Temperature Stirling Engine Motor Coffee Cup Stirling Engine Kit Education Toy	$27.99	Low Temperature Stirling Engine Motor Coffee Cup Stirling Engine Kit Education Toy quantity	$27.99