Amazing Stirling Engine KIT for 20$

Great toy kit for learning and school projects,I bought this kit
from ebay and its super cheap only 20$
The Stirling engine was invented by British physicist Robert Stirling in 1816, so it was named ""Stirling engine". An external combustion engine is an engine in which fuel is burned outside the cylinder.

Stirling engine from ebay:https://www.ebay.com/itm/324289554926