Stirling Engine Kit All-metal Vacuum Motor Model Kit Engine Motor Educational Toys Price_$50-$100 If it needs to be

If it needs to be closed

no open flames or batteries

Prohibit to add oil to lubricate

Perfect for Bulk Orders

This product requires less maintenance

Stirling Engine Kit All-metal Vacuum Motor Model Kit Engine Motor Educational Toys Price_$50-$100 If it needs to beStirling Engine Kit All metal Vacuum Motor Model Kit Engine Motor Educational Toys Features: . 100% brand new with high quality . The baseplate is made of hard solid wood and finely polished . The design of the bracket is vivid and hollowed out . Imported precision bearings for smooth rotation . Machined silver flywheel . Pure copper crankshaft is easy to disassemble . All metal alcohol lamp, heat resistant wick . All metal hot cylinders, valve