Stirling Engine Model Vacuum Motor Model Kit Engine Motor Educational Toys Price_《$30 The rubber ring can't stick

The rubber ring can't stick too tightly

which drives the engine to run fast

please wait for the alcohol to evaporate completely or dry the alcohol

power cylinder and the power piston is SUJ2 material fine grinding surface of special treatment

it is a beautiful piece of art

Stirling Engine Model Vacuum Motor Model Kit Engine Motor Educational Toys Price_《$30 The rubber ring can't stickStirling Engine Model Vacuum Motor Model Kit Engine Motor Educational Toys Features: . 100% brand new with high quality . Beautiful appearance and high quality . The structure is more compact, with a lever mechanism and a rocker mechanism, which looks mechanically full . Made of all metal fine grained, the process is highly precise and the internal design of the machine is tight . The whole is mainly made of stainless steel, the key component cylinder