IDS Home Hot Air Stirling Engine Model And Generator Science Discovery Educational Toys  (Multicolor)

Hot Air Stirling Engine Model and Generator Science Discovery Educational Toys Suitable for 12-15 years, 3-4 years, 5-7 years, 8-11 years | DIY Mini Air Stirling Engine Motor Model,?Electricity Learning Model Toys For Children Adult?the piston can be adjusted before or after, the bracket and heating cylinder can be adjusted? | Hot Air Thermoacoustic Stirling Engine,Single FlYywheel Hot Air Stirling Engine | With the help of the single flywheel, this engine run madly | Dimensions: 5.91 in x 3.35 in x 3.94 in Form Color: GoldenMaterial: IronSuitable Age : 3-4 years,5-7 years,8-11 years,12-15 yearsPacking List: 1 x Iron plate2 x Supports2 x Test tubes1 x Alcohol lamp1 x Tube1 x Motor1 x WheelDimensions: 5.91 in x 3.35 in x 3.94 in Weight: 13.58 oz