Classic Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Black Wooden Base - Black

Very disappointed not a classic newton cradle. It is aminiature reproduction that swings for 10 seconds. The balls are smaller than marbles. Buyer beware. Cheap plastic base thin fishing line for string. Not nice.

had to buy 2 because someone knocked the first one on the floor and was sooo tangled ,the only thing to do was get another! Just make sure you put it somewhere safe and always store it or transport it with all the packaging it comes with.

What a piece of crap. So disappointed. Doesn’t swing very long. Took to work still packed and I was embarrassed when my co workers tried it. Going in the trash

Smaller than I expected, but still quality.

Nice

Tangles very easily then impossible to fix. Don't recommend

Tangled and unusable the first day.

Got for a present for grandkids. They had the balls all wrapped around and in aknot in 5 minutesd. Threw it away in disgust.