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★★★★★
4.76/5 6700+ Happy Customers
Best-selling item in Kids & Toys

Casovina Build-Your-Own Robotic Hand STEM Kit for Kids Ages 8 to 14

$114.95 $34.95 Save 70%
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Free UPS Shipping Within the U.S.
30-Day Money-Back Guarantee
Only 11 left in stock!
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NOTICE: This product is one of our bestsellers and is already sold out in our physical store. If the “Add to cart” button still works, it means the product is still in stock online in limited quantities.
BLACK FRIDAY SALE
UP TO 70% OFF + FREE MYSTERY GIFT 🎁
00DAYS
:
00HRS
:
00MIN
:
00SEC
+ EXTRA BUNDLE DISCOUNT
Mix & match any items
−10%BUY 2
−15%BUY 3
−20%BUY 4+
✓ Discount applied automatically at checkout

Build a hand that moves like yours

These stem toys for kids put a working mechanical hand in the hands of builders ages 8 to 14. Following the step-by-step manual, they assemble the wooden parts into a machine that grips and moves, and discover the science behind it as they go. It is 100% screen-free, confidence-building play that feels like being a superhero engineer. Made from high-quality engineered wood, the finished model is sturdy enough to play with for a long time, and every part needed is in the box, with replacement parts available for life.

Why you'll love it

  • Real mechanics: Build a hand that actually grips, then learn why it works
  • Engineered wood: Durable, safe, good-looking pieces that last
  • Step-by-step manual: Easy instructions make the build smooth and satisfying
  • Everything included: All parts in the box plus lifetime replacement parts
  • Award winning: Recognized by STEM organizations and toy-of-the-year juries

Perfect for: rainy weekends, science fair prep, birthday gifts, Christmas presents

30-Day Money-Back Guarantee

We love our products and are confident that you will too! That’s why we offer a 30-day money-back guarantee. If the product doesn’t meet your expectations, simply return it for a full refund.

Customer Reviews

★ ★ ★ ★ ★
4.76 out of 5
Based on 6783 reviews
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4684
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E ✓
Eric Cooper Verified

Didn't have to follow up

Got the confirmation right away, then another email when it shipped. Tracking worked and the package arrived when they said it would. Pretty straightforward
★ ★ ★ ★ ★
A ✓
Andrew Turner Verified

Just as described

Nothing missing and no surprises when I opened the box. What arrived matched what I'd seen on the website
★ ★ ★ ★ ★
K ✓
Kristen Hall Verified

Better price than other places

Shopped around a little before ordering and this was quite a bit cheaper. Delivery went as expected too, so I'm happy with it.
★ ★ ★ ★ ★
S ✓
Samantha Green Verified

Actually answered my question

I emailed before ordering because I couldn't figure out which option I needed. Got a real explanation of the differences, not just a link to the page I'd already read. Sounds like a small thing, but it helped me decide. Ordered that evening and I'm happy with what showed up.
★ ★ ★ ★ ★
T ✓
Tyler Walker Verified

Good experience again

My first order was just something small a few months ago. That went well, so I checked here when I needed something else. A completely different kind of purchase this time, but ordering was just as easy. Saved me another evening of shopping around!
★ ★ ★ ★ ★
S ✓
Steven Harris Verified

Here in two days!

Ordered Sunday evening and it was here Tuesday morning. Wasn't expecting that, especially after ordering over the weekend
★ ★ ★ ★ ★
C ✓
Courtney Robinson Verified

really happy

Everything arrived, all good 😊
★ ★ ★ ★ ★
E ✓
Emily Sanders Verified

Picked the wrong option

Totally my mistake, I chose the wrong option and didn't notice until I got the confirmation. Sent an email and they were able to change it before it shipped. Glad I didn't have to deal with sending it back afterward!
★ ★ ★ ★ ★
R ✓
Ryan Evans Verified

Good value

Bought it on sale. Happy with what I paid and it's what I was looking for, so that works for me.
★ ★ ★ ★ ★
R ✓
Rebecca Henderson Verified

Wasn't sure at first

Hadn't heard of Casovina before and wasn't sure about ordering from somewhere new. Just bought one thing to start. It took a little while to ship, but they kept me updated and everything arrived as described. Happy with the purchase and I'd feel comfortable ordering again.
★ ★ ★ ★ ★
N ✓
Natalie Foster Verified

Helpful when there was a problem

There was a mix-up with my order, so I reached out. Sent a photo and they explained what would happen next. Didn't have to tell the same story to a bunch of different people, which I appreciated. All taken care of now
★ ★ ★ ★ ★
R ✓
Robert Hayes Verified

Easy enough

Ordered on my phone during my lunch break. Checkout was easy and the confirmation had everything I needed.
★ ★ ★ ★ ★
A ✓
Ashley Jackson Verified

Found it online instead

They didn't have the one I wanted when I stopped by the store, but suggested checking online. Was able to order it on the website later that day. Would've preferred to take it home right then, but this worked out fine.
★ ★ ★ ★ ★
A ✓
Amber Kelly Verified

Back for another order

Second order now, both went just fine 👍
★ ★ ★ ★ ★
B ✓
Brandon Garcia Verified

Packed well

One corner of the box was dented, but everything inside was well protected. Nothing damaged.
★ ★ ★ ★ ★
A ✓
Adam Reed Verified

Nice find

Just what I needed, good price too
★ ★ ★ ★ ★
O ✓
Olivia Graham Verified

Return was straightforward

The order arrived fine, but I decided not to keep it. Emailed about a return and got clear instructions. I was mostly worried about having to follow up on the refund, but got a confirmation once the return was processed and the money came back afterward. Didn't have to chase it down.
★ ★ ★ ★ ★
J ✓
Justin Nelson Verified

Worth checking the sale

Got what I wanted and spent less than I'd planned. I'll take that!
★ ★ ★ ★ ★
H ✓
Hannah Murphy Verified

They checked instead of guessing

Had a question about a detail in the description. The person replying actually checked on it instead of guessing. Took another email to get the answer, but at least it was clear.
★ ★ ★ ★ ★
N ✓
Nathan Ward Verified

No complaints

Exactly what I ordered. All good
★ ★ ★ ★ ★
S ✓
Stephanie Howard Verified

Exchange taken care of

Needed to exchange my order for a different option and figured it would be a hassle. It didn't happen overnight, but the team explained what to do and kept me updated. The replacement is here now and it's the right one this time. Thanks for helping me sort it out.
★ ★ ★ ★ ★
H ✓
Heather Jenkins Verified

Thanks, David!

David, the owner, was patient with all my questions when I stopped by the store. I hadn't quite decided what I wanted and didn't feel pushed to buy anything. Went home, thought it over and ordered online later.
★ ★ ★ ★ ★
Z ✓
Zachary Long Verified

Earlier than expected

Thought this would arrive toward the end of the week, so it was a nice surprise when it showed up early. I was even home to bring the package inside!
★ ★ ★ ★ ★
M ✓
Michael Sullivan Verified

Worked out well

Fair price, arrived on time. Happy customer
★ ★ ★ ★ ★
K ✓
Kevin Carter Verified

Helpful even after the purchase

Had a question after my order arrived and wasn't sure how much help I'd get once the sale was done. They got back to me with a clear answer and that took care of it. Happy with the purchase, but the help afterward stood out.
Build-Your-Own Robotic Hand STEM Kit for Kids Ages 8 to 14
Casovina Build-Your-Own Robotic Hand STEM Kit for Kids Ages 8 to 14
$114.95 $34.95

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Company name: Casovina

Business address: 4400 Sharon Road, Charlotte, NC 28211, United States

Email: support@madebycasovina.com
Customer Service Hours: 
Mon–Fri: 09:00 am–05:00 pm
Sat & Sun: Closed

Response time: Within 2 business days

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STEM Toys for Kids Ages 8 to 14 Robotic Hand Kit