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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
×	Hot Echo Type Single Cylinder Quartz Heating Tube Stirling Engine Model	$29.99	Hot Echo Type Single Cylinder Quartz Heating Tube Stirling Engine Model quantity	$29.99
×	DIY Acoustic Levitation Electronics Makes Learning Kits for Science and Small Experimental Standing Waves	$22.99	DIY Acoustic Levitation Electronics Makes Learning Kits for Science and Small Experimental Standing Waves quantity	$22.99
×	V8 Engine Model Kit that Works - Build Your Own V8 Engine - V8 Engine for Capra VS4-10	$109.99	V8 Engine Model Kit that Works - Build Your Own V8 Engine - V8 Engine for Capra VS4-10 quantity	$109.99

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