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ENJOMOR Hog Mini Balance-Beam Stirling Engine is a 136g ready-to-run balance-beam hot-air engine made from brass, stainless steel and aluminum for com..

ENJOMOR Mini Beta Hot-Air Stirling Engine is a compact metal-and-bamboo external-combustion model that exposes flywheel and piston motion on a small d..

Working Vertical Single-Cylinder Steam Engine Model is a compact finished metal mechanism that exposes the piston, connecting rod and flywheel of a tr..