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Thames & Kosmos Bionic Robotic Arm STEM Experiment Kit, Toy of The Year Finalist, Build a Mechanical Arm, No Batteries/Motors Required | Innovative System | Ages 10+ with Help, 14+ Independent Play

  • Based on 92 reviews
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Availability: In Stock.
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Arrives Friday, May 1
Order within 1 hour and 58 minutes
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Features

  • Assemble a cutting-edge, working toy robotic arm from nearly 300 pieces!
  • No motors or electricity required! The innovative system is controlled by a pair of joysticks that pull and release a network of nylon cables to enable intuitive and precise movements.
  • The buttons on the top of the joysticks open, close, and rotate the arm and the claw that attaches to the end of it; challenge yourself or friends to grab, move, and release various objects!
  • A full-color, step-by-step manual guides assembly and experimentation and provides engaging scientific info about robotic arms in the real-world, biomimicry, and mechanical engineering.
  • A fun, informative STEM building challenge for kids ages 10+ with help or 14+ for independent play
  • A 2025 Educational Toy of the Year Finalist!
  • Best Product's 2024 Robot of the Year, A 2024 Toy Insider Top Holiday Toy

Description

The robotic arm of the future is here! Assemble this cutting-edge, segmented arm from almost 300 plastic pieces and learn how each part comes together in its intricate mechanical design. This innovative system is controlled by a pair of joysticks that pull and release a network of nylon cables threaded throughout, enabling intuitive and precise movements, much like how tendons work to control the muscles in your arm. The result is a mesmerizing motion reminiscent of a cyborg creature’s tentacles in a sci-fi movie! Use the buttons on the top of each joystick to open, close, and rotate the claw 180 degrees. Challenge yourself or your friends to grab, move, and release various objects. Bonus: Switch out the gripper claw with a model of an eel’s head to transform your robotic arm into a slithery bionic eel. A full-color manual guides model building and experimentation and provides engaging scientific information about how this type of robotic arm works while offering up real- world examples.

Brand Name: Thames & Kosmos


Age Range Description: Kid


Educational Objective: Construction Skills, Critical Thinking, Dexterity Skills, Problem Solving Skills, STEM


UPC: 814743018754


Manufacturer Minimum Age (MONTHS): 120.0


Model Number: 620506


Manufacturer Part Number: 620506


Manufacturer: Thames & Kosmos


Item Type Name: Robotics Science Kit


Unit Count: 1.0 Count


Included Components: Nylon cables, Plastic building pieces


Theme: Movie


Is Assembly Required: Yes


Material Type: Plastic


Size: Large


Item Dimensions: 15.7 x 4.1 x 11.4 inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great build
Took forever to build but my son and I loved building it. Fun build that will take up half of xmass vacation
Reviewed in the United States on February 22, 2026 by Allan

  • Fun to build!
Fun to build! My kid enjoyed building this and kept him occupied for hours.
Reviewed in the United States on March 5, 2026 by LR

  • A gift
It was a gift and they loved it
Reviewed in the United States on January 15, 2026 by Sir oliver

  • Instructions are overwhelming
It took me two days to put together and the instructions were complicated. My grandson likes it for the most part and the only issue we have is that the button that open and closes the claw is a bit difficult for him to push.
Reviewed in the United States on October 10, 2025 by Holly

  • Bionic Robotic
My grandson love his Christmas gift. He loves it.
Reviewed in the United States on January 10, 2026 by Candido Martinez Jr.

  • Great for the mature kid
My 10 year old boy LIVES this but needed quite a bit of dad-help to put it together exactly right.
Reviewed in the United States on December 1, 2025 by Melanie Vander Plaats

  • Bought it for a grown man haha
My boyfriend is a whiz at puzzles, every year for his bday I try to find an impossible puzzle. Ten years I've been trying and this one finally challenged him. He completed it in one sitting on a rainy day (like 6 hrs) with movies playing in the background, but even he said it was hard. I can't imagine a kid could complete this without help. I'm pretty sure we'll take it to the goodwill, as the toy itself isn't all that entertaining for a 40 something man, but I was giddy that I finally challenged him. Absolutely would buy something like this again! ... show more
Reviewed in the United States on June 23, 2025 by jenn

  • Excellent challenge
As grandparents, we scored big on this gift for our grandson. He enjoys the challenge, having risen above the challenge of even the most intricate Lego products. We will plan on buying similar items for a couple more years.
Reviewed in the United States on April 3, 2025 by Pop

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