Double-cylinder Micro DIY Engine External Combustion Engine School Demonstration Early Learning Education Gift Playthings
sku: 4000086660765
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$29.87
Shipping from: China
Technical Details
| Heating Cylinder Inner Diameter: | 0.55in |
| Piston stroke: | 12mm / 0.47in |
| Speed per minute: | 2000-3000rpm |
| Type: | Other |
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