Specification Model SH 021Product Name Coaxial Swing Arm Stirling Engine ModelBase Material Solid WoodBracket Material BrassBody Material BrassHot Cylinder Material High Temperature Resistant Quartz GlassFlywheel Material Aluminum AlloyHeating Fuel 95℃ Medical AlcoholWeight 320gSize 130x80x90㎜Precautions Add alcohol to two thirds of the position do not add too full the engine will generate high temperature during operation children should be accompanied by their parents to operate do not touch high temperature parts during operation heat the cylinder heat the cylinder body turn off the alcohol lamp and wait for natural cooling before storing or filling with alcohol the cylinder piston cannot be added with any lubricating oil the piston has been solid lubricated at the factory Package included 1x Stirling Engine Model