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ENJOMOR Balance-Beam Stirling Generator Kit is a buildable metal balance mechanism that converts external heat into visible motion and small generator..
-51%
$68.59 $140.61
Stock: In Stock
Hot-Air Stirling Engine Generator with Color LED is a balance-style hot-air engine that drives a small generator and multicolor LED for a visible ener..
-51%
$63.69 $130.56
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