Car Engine Model All-metal Mini Manual Assembly V2 Double-cylinder Toy Collection Decoration Type_DIY Stirling Engine DC current meter to form

DC current meter to form the external circuit

* After the alcohol lamp burn for about 2 minutes

The size of steam tube is 3mm

Package Weight: 600g

heat it for 1 minute

Car Engine Model All-metal Mini Manual Assembly V2 Double-cylinder Toy Collection Decoration Type_DIY Stirling Engine DC current meter to formCar Engine Model All metal Mini Manual Assembly V2 Double cylinder Toy Collection Decoration Main Features Eco friendly aluminum alloy, stainless steel material, anodizing coloring process, durable and non toxic DIY assembled, cultivate kids' creativity and imagination Let the children have an interest in learning, thus creating the ability of children's thinking, mathematical combination logic Easy and funny to play Kids can learn the great power of