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The Thames & Kosmos Mega Cyborg Hand STEM Experiment Kit lets you build a giant, wearable hydraulic hand powered by water pressure. With over 200 pieces, adjustable finger joints, and three hand configurations, it offers a hands-on introduction to pneumatics and hydraulics without batteries or motors. Winner of the 2021 STEAM Toy of the Year, this kit is perfect for ages 7+ to explore robotics, engineering, and physics through an immersive, award-winning STEM experience.










| ASIN | B085LRW4VR |
| Age Range Description | Big Kid |
| Battery Description | No Battery required |
| Best Sellers Rank | #4,300 in Toys & Games ( See Top 100 in Toys & Games ) #35 in Educational Science Kits |
| Brand Name | Thames & Kosmos |
| Customer Reviews | 4.4 out of 5 stars 4,145 Reviews |
| Educational Objective | Exploratory Skills, STEM |
| Global Trade Identification Number | 00814743015197 |
| Included Components | Plastic building pieces, metal springs, flexible tubing, screws, manual |
| Item Dimensions | 10 x 4.75 x 11 inches |
| Item Type Name | Robotics & Programming STEM Experiment Kit |
| Item Weight | 1.8 pounds |
| Manufacturer | Thames & Kosmos |
| Manufacturer Maximum Age (MONTHS) | 360 |
| Manufacturer Minimum Age (MONTHS) | 84 |
| Manufacturer Part Number | 620501 |
| Manufacturer Warranty Description | 1 Year Warranty Against Manufacturer Defects |
| Material Type | Mixed |
| Model Number | 620501 |
| Number of Items | 1 |
| Set Name | Mega Cyborg Hand STEM Experiment Kit |
| Size | Small |
| Sub Brand | Mega Cyborg |
| Theme | Robots |
| UPC | 814743015197 814743016231 |
| Unit Count | 1 Count |
M**A
Challenging but Fun Build! Perfect with Adult Help
We bought the Mega Cyborg Hand for our 7 year old, and it has been such a fun and engaging project for our whole family. Building it together has been a great experience, though I would say a 7 year old definitely needs adult help and guidance for some of the steps. There are certain parts where an adult is required, but that actually made it a really enjoyable hands-on project to work on together. Our 10 year old also loves fiddling with it, which shows how well it spans multiple age ranges. The instructions are very clear and thoughtfully laid out, making the build feel much less intimidating. I especially loved that some pages in the manual include fun comic style stories and interesting facts about the physics behind how the mechanics work, it’s a great educational touch! We have absolutely loved this purchase for the value and are excited to finish building it and start using the hand. Highly recommend for families looking for a meaningful STEM project to do together. Age range: 7+
T**H
Great, maybe age 9-10+ if you want them to do it independently
This was awesome!! My kid needed something to keep himself busy this did the job. He’s 6 so did need more help but didn’t mind it. It turned out so great and could use it as a time to teach how hydraulics work. Great quality little large for his age but again. He’s younger than one might get it for. It is very complex and a little harder to screw the screws in but we loved the quality time.
M**S
Perfect STEM Gift: Fun and Educational Mega Cyborg Hand Kit!
I bought the Thames & Kosmos Mega Cyborg Hand STEM Experiment Kit as a Christmas gift for my 9-year-old son, and it was a huge hit! From the moment he opened it, he was excited to dive into the building process. The instructions were clear and easy for him to follow, and he managed to assemble it mostly on his own, with just a little guidance. Watching him figure out how each piece fit together and seeing his pride in completing it was priceless. The kit provides a fantastic hands-on learning experience, teaching mechanical concepts and the basics of hydraulics in a fun and engaging way. Once assembled, the cyborg hand is incredibly cool. It fits comfortably, works smoothly, and my son has been having a blast testing its capabilities, like picking up objects or pretending he's a robot. The fact that it’s adjustable for different hand sizes means he’ll be able to use it for a long time. This STEM kit is not only entertaining but also educational, sparking curiosity about engineering and science. I highly recommend it for any kid who loves to build, tinker, and explore how things work. It's a gift that keeps on giving!
F**S
Worth the money
This is a great toy for a kid who likes to build things. Not only will they build, but they can also make use of it and see how the structure correlates with the function. Of course, it has sparked requests for more toys like this but that is a great thing. It is nice if you want to keep your child stimulated without being in front of a screen all of the time. The instructions are straight forward. My only gripe is how the pieces have to be popped out and it does result in some sharp edges that need to be shaved down so the parts can fit. For this reason, I give this toy 4 stars instead of 5. I would recommend that the parts come separated already into separate bags. Otherwise, it is a great value for the money.
W**.
All around a great purchase.
Purchased for my 15year old son who is used to building plastic models. The box was in perfect condition when I received it and all the packaging and instructions were also in perfect condition. My son took his time and built the hand in about 4 hrs. Hand works great and the more you practice with it the better you get. It has its limitations when it comes to gripping things, but overall is a fun project. Definitely recommend.
W**G
Best STEM Product I have purchased
Best STEM item I have purchased for my 6-year-old grandson. I had to be there through the entire building process, but we built it together. Awesome outcome, great instructions and great learning experience on the concepts of compressors and hydraulics. This hydraulic hand is a great way to engage in science. I tried MANY items this summer (mostly computer and tech based) and none came close to this hand. I will definitely look for the Thames and Kosmos brand again. Lots of parts and up-front prep work before you can begin building.
K**S
Delicate but cool
It was pretty intense assembling this hand. Some of the crucial parts slip out of their attachment points making it tough to operate. Plan to spend the better part of the day building it (tool us 4 hours) and requires some help from adults. A part did break on one of the fingers. Wish the had a few extra parts. Otherwise, it’s a cool hand. Maybe build but not use to often.
D**E
Tedious to build but great result
The end result has brought lots of fun to my grandson. It did take parental help to build it but was a good Dad and son adventure.
J**N
POOR QUALITY
dont trust the seller
H**L
Awesome cyborg hand!
My son The really enjoyed building this cyborg hand. It taught him a lot about physics.. a great gift idea.
C**E
A mão é bem legal dá para pegar coisas, as crianças e os pais amaram
Maravilhoso!!!
K**A
Shipment issue
The product looks amazing with very very detailed instruction inside. However, the box was delivered without wrapping, no Amazon bag, no Amazon box. The box is damaged and does not look like a new one. The shipment sticker was put directly on the box with the product. This is a gift and it took me a while to remove the sticker. Consider another seller of this product.
F**Z
Impresionante
La mano es muy bonita aunque hay que dedicarle un poco de tiempo al armado, pero se ve super genial una vez terminada
Trustpilot
3 weeks ago
2 weeks ago