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    $30.57
    3D Printed Transmission Model, 4-Speed Gearbox, 3D Printed Tech Toy, Creative Stress-Relief Toy, Desk Decoration, Gifts For Kids/Boyfriend
    Etsy
    Free shipping
    $30.57
    3D Printed Transmission Model, 4-Speed Gearbox, 3D Printed Tech Toy, Creative Stress-Relief Toy, Desk Decoration, Gifts For Kids/Boyfriend
    Etsy
    $35.99
    Learning Resources Gears! Gears! Gears! 100 Piece Deluxe Building Set Stem, Ages 3+
    Walmart
    $35.99
    Learning Resources Gears! Gears! Gears! 100 Piece Deluxe Building Set Stem, Ages 3+
    Walmart
    $19.80
    Qing Shuang Stirling Engine Steam Engine Physics Experiment Popular Science Invention Toy Model Motor Model Educational Toy Generator Colorful LED,
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    $19.80
    Qing Shuang Stirling Engine Steam Engine Physics Experiment Popular Science Invention Toy Model Motor Model Educational Toy Generator Colorful LED,
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    Model Airplane STEM Building Projects Toys - DIY Building STEM Projects Toys For Kids Boys Girls Ages 8-12-16, Assembly Science Kit Model Plane
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    Model Airplane STEM Building Projects Toys - DIY Building STEM Projects Toys For Kids Boys Girls Ages 8-12-16, Assembly Science Kit Model Plane
    Amazon.com
    $18.77
    $36.99
    Learning Resources Gears! Gears! Gears! 100-Piece Deluxe Building Set -STEM Activities, Fine Motor Skills, Toddler Explorer Kit, Science And
    Amazon.com
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    $18.77
    $36.99
    Learning Resources Gears! Gears! Gears! 100-Piece Deluxe Building Set -STEM Activities, Fine Motor Skills, Toddler Explorer Kit, Science And
    Amazon.com
    $161.03
    Toy Factory 3D Mechanical Puzzle Kit - Wooden Gear Model | DIY STEM Puzzle For Adults & Teens | 449PC
    Etsy
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    $161.03
    Toy Factory 3D Mechanical Puzzle Kit - Wooden Gear Model | DIY STEM Puzzle For Adults & Teens | 449PC
    Etsy
    $17.49
    $24.99
    Learning Resources Gears! Gears! Gears! Wreckergears, STEM Activities, Fine Motor Skills, Toddler Explorer Kit, Science And Construction, Boys And
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    Learning Resources Gears! Gears! Gears! Wreckergears, STEM Activities, Fine Motor Skills, Toddler Explorer Kit, Science And Construction, Boys And
    Amazon.com
    $8.07
    Self-Moving Science Toy For Children - Wooden Transparent Gear Car With Visible Working Gears - No Battery Stem Educational Gift For Boys & Girls
    Walmart
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    $8.07
    Self-Moving Science Toy For Children - Wooden Transparent Gear Car With Visible Working Gears - No Battery Stem Educational Gift For Boys & Girls
    Walmart