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× Mini Hot Air Stirling Engine Single Cylinder Engine Motor Model STEM Educational Toy - Enginediy $20.99
$20.99
× Hot Echo Type Single Cylinder Quartz Heating Tube Stirling Engine Model $29.99
$29.99
× DIY Acoustic Levitation Electronics Makes Learning Kits for Science and Small Experimental Standing Waves $22.99
$22.99

Cart Totals

Subtotal $73.97
Total $73.97