Description Specification Brand STARPOWERProduct Name Stirling steam engine motor modelProduct NO QX DWCL 01Color Blue Silver Red Optional Product Size Φ90 135mmPackage Size 200 110 115mmPackage Weight 0 20kgFeature 1 EASY TO PLAY This engine is powered by the temperature differential between the top and bottom panels Just take it out of the box and put it on a mug of hot water wait for seconds then give the flywheel a gentle turn and you re up and running 2 MULTIPURPOSE Multipurpose Stirling engine it can be used for kids science projects physics and mechanics learning classroom presentations and more 3 MECHANICAL TOY Stirling engine is a well designed and crafted mechanical toy ideal for demonstrating the fundamentals of external combustion engines 4 PRACTICAL MODEL Air engine is a great anyone interested in science and can be used as a teaching tool to demonstrate knowledge of mechanics and physics 5 HIGH QUALITY MATERIAL Low temperature differential engine model is made of high quality aluminum material which is not easy to rust strong and enduring Note There may be errors in size measurement please refer to the actual product Package included 1X Stirling Steam Engine Motor Model