1、[Reduce Resistance] Exquisite appearance, rhombus shaped connecting rod structure design, reduce lateral force, reduce resistance, increase flywheel design, easier to start, longer running time. 2、[Interesting And Imaginative] Stirling engine model is a interesting and imaginative tabletop toy, designed with dual mini generator loads that can also be used as a tabletop decorative. 3、[Stimulate Creativity] Can be used as a science educational toy to study how internal combustion engines work, provide material for children's science projects, stimulate curiosity and creativity. 4、[Physics And Mechanical Learning] An perfect gift for anyone interested in science, and as a teaching tool to demonstrate knowledge of mechanics and physics. 5、[Widely Application] Widely suitable for many situations, such as holiday gifts for family, friends and children, office, classroom presentations, etc. Item Type: Stirling Engine Model Bottom Plate Product Size: Approx. 19 x 9 cm / 7.5 x 3.5 in Material: Stainless steel, copper Application: For children's science projects, physics and mechanical learning, classroom presentations Applicable People: Over 14 years old, easy to use, can more intuitively observe the operation of the Stirling engine Weight: Approx. 927g / 32.7oz 1 x Bottom Plate 1 x Ethanol Bottle (Liquid Not Included) 1 x Ethanol Lamp 1 x Ethanol Wick 3 x Hex Wrench 1 x Chinese And English Manual