This kit was a lot of fun to build. I am in my 30's, but I still enjoyed learning the basic of hydraulic power.

I added food coloring to the water to distinguish the two systems, and I replaced the included brads with some bolts I had laying around - I found that the brads didn't really hold the claw pieces in place too well.

But overall, I am thrilled with this product and highly recommend it.

My son was very disappointed in the design of this hydraulic claw. Having something made of cardboard that then requires water to work doesn't really go well together. His cardboard got wet almost instantly and began to rip and fall apart.

Great for teaching kids about hydraulics, but the kit was really frustrating to put together due to ill-fitted holes, bent screws and beyond lousy instructions! What saved the project was the pictures from other buyers which allowed us to make out the instructions.

This was the worst product ever. My 8 year old son was so frustrated about the missing parts. This is not even 1 dollar value and it's total junk. We are very upset about this as he saved up his allowance for a while and bought this. But couldn't complete the project because it's total junk! 🤬🤬🤬🤬🤬🤬