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× Hot Air Stirling Engine Model Thermoacoustic Engine Education Toy Electricity Power RS-01 - Enginediy $44.99
$44.99
× Micro DIY Stirling Engine Kit with Big Flywheel Design Engine Motor Model - Enginediy $19.99
$19.99
× Stark 3 Blades Vehicle-mounted Solar Windmill Motor Solar Physics Toy $17.99
$17.99

Cart Totals

Subtotal $82.97
Total $82.97