Mechanical Insects Combo: Wasp and Ant Metal Puzzle Kits Price_$50-$100 Stirling Engine: The engine can

Stirling Engine: The engine can be lit with LED light-emitting diodes or light bulbs

but also equipped with a large torque starter motor

Package Weight: 2050g

Main Rotor Blade *4

More powerful and lighter crankcase with additional crankshaft bearings

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