low temperature stirling engine educational toys toy model kits 

Wheel Color: black 

Wheel Material: ABS

Wheel diameter ：78mm

Cylinder diameter ：90mm

Cylinder material : Stainless steel 

piston material ：High purity graphite ，sponge

model size : 90mm*100mm(H)

model weight :158g

Attention ：

prohibit burning  !!!!

prohibit add water .lubricating oil into the cylinder !!!!!

it will running on your warm hand ,on the hot water cup ,it is a very interesting puzzle science education toy model or a gift for your children , your friends and your  family member !

Note:
Please allow minor errors due to manual measurement.
Item color displayed in photos may be showing slightly different since monitors are not calibrated same.

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• It usually takes about 10-30 working days to arrive for economy shipping which not including tracking number; 7-15 working days for standard shipping which including tracking number. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.
• Note: It may takes more than 30 working days to other countries such as Mexico,Brazil,Chile,Peru, because they is far away from China.
• PS: We also offer faster shipping service (3-5 days to deliver), such as DHL,EMS, but buyers need to pay for the extra shipping cost. Please contact us if you need it.
• Customs Declaration:
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