QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads)

Always loved these. This one lasted about 3 weeks but not because the product is flawed, because our son was very rough with it and got it twisted up. The product itself is just fine.

This Newton's Cradle was a great teaching tool—my students grasped the concept more easily. Monitor use as the strings can tangle. It arrived promptly and was perfectly packaged.

This 7-ball Newton’s Cradle is a great desk decoration and surprisingly fun to watch. The balls are well-aligned and the motion is smooth, clearly demonstrating the physics principles in a calming way. I keep it on my office desk, and it always draws attention. The clicking sound is soft and not distracting, making it perfect for a work or study environment. The base is stable and setup was very easy. A great gift for science lovers or anyone looking for a unique desk accessory. Very happy with this purchase.

This cradle is small-ish but arrived packaged well and works as expected. Perfect for desk or table. The wood base gives it a nice look. I am happy with it for the price.

My son requested one of these for Christmas. Well made and he loves playing with it.

Worked okay for a few minutes but broke way too easily. Barely even did anything and one of the balls just snapped out. The string they are on is not very secure. It looks nice but didn't last long

Great Valentine's day present for my fiance

Great teaching tool for “conservation of energy”. Also, a fun tool. NO BATTERIES NEEDED!!

Fine as a pre-teen toy

Marche très bien

The item delivered was much smaller than indicated, the base was only 9cm x 8,5cm and the height was only 9cm. The principle of conservation of momentum was demonstrable and so will be adequate for its purpose. However I was disappointed with the size. This needs to be amended in the product description.

良い。届くのに少し時間はかかるがものはいい。

عادية ومانصح فيها تشطيبها وخامتها عادية ليس المتوقع