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4M Hydraulic Robot Arm Kids Science Kit, Model:4106

<ul><li>Hydraulic Principle Exploration: Build a working mechanical arm to explore simple hydraulic principles.</li><li>Object Manipulation: The realistic gripper can lift, move, and grab a wide range of objects without electricity.</li><li>STEM Concept Learning: Helps teach various STEM-based concepts.</li><li>Assembly Kit Included: Includes parts to build the robot arm and instructions.</li><li>Age Recommendation: Recommended for age 8 years and up.</li></ul>

<ul><li>Explore simple hydraulic principles and build a working mechanical arm that can move and grab</li><li>The realistic gripper can lift, move and grab a wide range of objects, all without electricity</li><li>Helps teach various STEM based concepts</li><li>Includes parts to build robot arm and instructions</li><li>Recommended for age 8 years and up</li></ul>

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Explore simple hydraulic principles and build a working mechanical arm that can move and grab. The realistic gripper can lift, move and grab a wide range of objects - all without electricity. Includes robot arm parts and instructions. Recommended for age 8 years and up.

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[This review was collected as part of a promotion.] I like that you have to use screws to attached the parts instead of glue. I've purchased similar products I the past that used glue to attach to the balsa wood but the product didn't stay together long.

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This was a Christmas gift for my eight year old son. He loved this gift and couldn't wait to build it. He was able to do this mostly on his own with some guidance. There were several leaning moments as he discovered how this arm worked and after he was finished he has played with it for days and not most interest. I highly recommend.

Great learning tool

This was so much fun to sit next to my son, who is 7, and watch him build this arm!

help them grow!

This was easy to follow step-by-step instructions and it mostly kept my 5 years old's attention to build it. It's pretty cool how it works. But it broke easily not too long after putting it together.

Good beginner building set

My eight year old enjoyed building this, but the peg that the grabber "hinges" on,  constantly pops out. Really frustrating because it could be great fun if they could just have gotten that one piece right.

Fun...but be aware that it's not perfect

Leaked water so the arm wouldnt work. It was easy to build, directions were good, but the quality is terrible. Every squeeze of the plunger leaked water so the arm didnt work from the beginning.  The adults tried to fix the leaks thinking there was a builder error but the assembly was correct. It just doesnt work.

Not worth the money. Disappointing

Good for construction skills, but the arm didn't work. Not enough water pressure.

Ok, but junky.