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Marble Genius Add-on Accessory Marble Rails Automatic Chain Lift, 1 Piece Marble Run for Kids 8+ (Requires 2 AA Batteries), STEM, Great for Kids & Teens
$ 24.99
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Marble Genius Add-on Accessory Marble Rails Bases Set, 5 Piece Marble Run for Kids 8+ (3 Small Round Bases & 2 Wide Arches), STEM, Great for Kids & Teens
$ 18.99
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Marble Genius Add-on Accessory Marble Rails Booster Set, 30 Piece Marble Run for Kids 8+ (Action Rails, Jumps, Swings, Tubes & 12 Glass Marbles), STEM, Great for Kids & Teens
$ 26.99
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Marble Genius Add-on Accessory Marble Rails Jumps Set, 10 Piece Marble Run for Kids 8+ (2 Standard Jumps, 3 Small Jumps, 5 Catches), STEM, Great for Kids & Teens
$ 18.99
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Marble Genius Add-on Accessory Marble Rails Physics Set, 5 Piece Marble Run for Kids 8+ (3 Y Splitters & 2 Loops), STEM, Great for Kids & Teens
$ 18.99
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Marble Genius Add-on Accessory Marble Rails Swings & Catches Set, 8 Piece Marble Run for Kids 8+ (4 Swings & 4 Catches), STEM, Great for Kids & Teens
$ 18.99
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Marble Genius Add-on Accessory Marble Rails Tubes Set, 40 Piece Marble Run for Kids 8+ (25 Tubes & 15 Half Tubes), STEM, Great for Kids & Teens
$ 14.99
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Marble Genius Marble Rails Extreme Set, 625 Piece Marble Run for Kids 8+ (55 Marbles, 80 Rail Pieces, 20 Base Pieces & More), STEM, Full-Color Instructions, Great for Kids & Teens
$ 99.99
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Marble Genius Marble Rails Starter Set, 200 Piece Marble Run for Kids 8+ (30 Marbles, 30 Rail Pieces, 12 Base Pieces & More), STEM, Full-Color Instructions, Great for Kids & Teens
$ 49.99
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Marble Genius Marble Rails Super Set, 325 Piece Marble Run for Kids 8+ (45 Marbles, 15 Rail Pieces, 10 Base Pieces & More), STEM, Full-Color Instructions, Great for Kids & Teens
$ 69.99
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