Photo 1 of Stemnex: Amazing Steam Engine, Learn Steam Engine Technology, Build Your Own Steam Engine, Contains 140 Pieces, for Ages 10 and up

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Photo 1 of Stemnex: Amazing Steam Engine, Learn Steam Engine Technology, Build Your Own Steam Engine, Contains 140 Pieces, for Ages 10 and upPhoto 2 of Stemnex: Amazing Steam Engine, Learn Steam Engine Technology, Build Your Own Steam Engine, Contains 140 Pieces, for Ages 10 and up