Mini Hot Air Stirling Engine Motor Model Educational Toy Kits

Description

Using mold steel manufacturing, solid and firm; Flywheel , fine milling, texture and beauty double combination; Rod made ??of stainless steel manufacturing; Dynamic link sets of aluminum alloy cylinder, power cylinder and the power piston is SUJ2 material fine grinding surface of special treatment, high hardness. Do not wear high-speed ultra-long-running Heating cylinder of quartz glass