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Wimshurst Machine Physics Electrostatic Generator Model for Science Education enginediy

Original price was: $ 70.Current price is: $ 35.
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Wireless Power Transmission Plasma Music Tesla Coil Engine DIY

Original price was: $ 50.Current price is: $ 30.
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Working Mini V8 Engine Model – Miniature V8 Engine Model That Works – STEM Toys Collection Engine DIY

Original price was: $ 80.Current price is: $ 40.