Limited stock

Ages 9+

Hydraulic Claw


Put water to work with hydraulics! Engineer your own hydraulic lifting claw with tubes, syringes, and water before putting it through a series of fun challenges. Then, explore how hydraulic systems work and see how they can be incorporated into heavy machinery, art installations, and even animatronics!

Why it’s awesome

  1. Water at work

    Build hydraulic systems and experience hands-on engineering.

  2. Make-it-move mechanics

    Experiment with building linkages to create a grabber claw.

  3. Engineering design challenges

    Grab, lift, and move to put your hydraulic claw to the test.

What’s included?

  • 27 chipboard pieces

  • 6 syringes

  • 3 tubes

  • 30 brads

  • sticky foam sheet

  • 12 zip ties

  • 2 clothespins

  • illustrated instruction booklet

  • Tinker Zine

Topics explored

  1. Hydraulic systems

  2. Gases and liquids

  3. Engineering + design

Additional details

From the desk of the product designer:

Behind the design

This is hands down (or claws down?) one of my favorite projects because it allows for a ton of customization. Plus, the motion of the hydraulics is so mesmerizing to watch.

- KiwiCo Product Designer

By the numbers


Hydraulic systems included


Construction pieces included


Customization opportunities



30 reviews

Customer images



    It was the perfect rainy day project as it kept my daughter occupied and learning.



    I have been obsessing over Kiwico for months and finally ordered some of the items that managed to arrive all the way to the UK in good nick. My son is a wee 5 year (below the suggested age group for this item) but understands the concept of ‘hydraulics’ because we subscribe to Mel science boxes catered to 5 year olds and one of the box was about hydraulics. Both my son and I were impressed with the contents of the box and how it is such a layered project - so you don’t finish the project as soon as we finish building one thing. The book that came in the box is good too. He has been inventing his own contraptions and seems to enjoy himself while playing with his invention. I look forward to buying more things from kiwico store but they seem to have limited items that can be shipped to the UK which is a shame.



    My son liked this project but it was difficult to get it connected to the box & to make it fully functional. Still his 2nd favorite project



    My son absolutely loved the hydraulic claw! He wasn’t expecting it and really didn’t know what it was until we got into the science of it. Once it was completed he said it was “So Cool” and his favorite box yet.



    My nephew really loved putting this together, and together with my niece, have discovered that there are tons of things in my sister's house that they can pick up!



    Enjoyed any minute putting it together with my son and still enjoying it see him playing with it

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