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a relaxing stress relief physics toy for people in the office
This is an engine work in good condition for many years without lubrication
The bottom plate and connecting rod are made of 304 stainless steel
Package Weight: 620g
Methanol fuel
Stirling Engine Kit V-shape Four-cylinder Vacuum Suction v4 Engine Model Toy Price_$50-$100 a relaxing stress relief physicsV shape Four cylinder Vacuum Suction Engine Model Toy for Developing Intelligence Features: . 100% brand new with high quality . The V shaped four cylinder is domineering and looks beautiful . Selected quality materials, made of pure metal, high end atmosphere . The overall polishing is meticulous, the color is bright, it is not easy to rust and fade, and has a high end texture, achieving a dual combination of texture and beauty . The alcohol lamp has
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