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Remote Control DIY Metal Tractor Model Kit - Educational Gift with APP Control Features
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ENJOMOR Luminous Flywheel Stirling Engine DIY Kit - Vintage STEM Toy
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ENJOMOR γ-Type Hot Air Stirling Engine DIY Assembly Kit - Educational STEM Model Gift
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Premium Hot Air Single Cylinder Stirling Engine DIY Model
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RETROL VE-01 Crossbeam Flame Eater Vacuum Engine Model - Educational External Combustion Toy for Mechanical Enthusiasts
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Electric Functional Punch Press Model - RETROL Simulated Metal for Collectors and DIY Enthusiasts
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