SEVNPRIMESEVNPRIME 5 Large Beads Newton's Cradle Balance Balls Desk Toys Office Decorations with Black Wooden Base Desk Balance Balls Fun Science Physics Toys for Office/Bedroom/Living Room

Movement is very smooth and precise, no need to build,it comes ready right out the box,great gift,keeps you entertained for hours,functions very well showing the laws of physics and inertia,very durable.

Always wanted 1 of these finally have 1!!! Thank u this is awesome!!! Perfect size for desk...works fine...seems durable...great value for the money!!

i got this for my 9 year old daughter for Christmas. she liked it, but they get tangled easier than i thought they would. the strings are thin, and the size is smaller than i thought. but, to the positive parts, its light and the balls never seem lose or fall out. its easy to pull back and we've never had a problem, (other than my 2 year old trying to tangle it, but thats my problem.) and it never gets annoying with the sound. 4 stars

We love this. For safety, I used a nail file to smooth a few sharp wires at the top. Otherwise, perfect!

Very well packaged and a nice larger size cradle....definitely worth the price.I bought it for my 5 yr old daughter who has adhd....it really helps her calm down when over stimulated...she calls it her timer 😆.

Normally the hype about these hanging balls is that physics makes it go forever. These slow down really fast and I'm not sure why. But ultimately I've had it for a while and it looks cool

This is EXACTLY what I was looking for! The balls have a good weight to them and the overall quality is very impressive. Could not be happier!!!!

This is a fun item to have at home or work desk. Rarely can anyone pass it without playing with it. My husband took it to work but didn’t use all the original packaging and it fell off car seat to a tangled mess. Good thing I do those tangled puzzle strings on my phone since I was miraculously able to untangle it. Lol