CERROPI Newton Cradle Balance Balls, Newton Pendulum with 7 Balls, Classic Newton Swing Ball, Science Physics Gadget | Desk Toys & Accessories, 70+ Sec Swingtime, Marble Base, Black

Well worth the extra cost for this fine Newton Cradle. Well made. Great materials. Works fantastic. Looks great too!

Very sturdy and beautiful. Purchased as a gift for employee and she loved the quality.

My husband loved this gift. He said it has a very attractive marble base with a lot of weight to it. It is made very well and does not look cheap. The balls swung with no issues, everything was balanced well. Great packaging with instructions. A great gift for anyone with an office setting. I included two photos that he sent me, I forgot to photograph it before he took them to work. As you can see it is a decent size with 7 shiny balls. You won't be disappointed.

Very nice. It seems a bit costly for a few of reason. 1: It just is; 2: it comes with and extra balls with not instruction on how to tie it in; 3: why do you need an extra ball? --can a ball break (there supposed to be steel)?; can a string break and a ball be lost? Some for me, some things are unclear, but it's a nice system that works well.

This one was a little expensive compared to a lot of others I saw, but it was definitely worth it. The base is heavy and sturdy. The metal bars and balls are real metal and solid. It’s really nice. My 14 year old wanted one of these really bad and he was really excited for this one!

I purchased this Newton Cradle Balance Balls set for my husband. He’s had it for over a year and is very happy with it. The quality is great. It is very sturdy. Would recommend.

Great quality and fun for all. I hit this for my husband’s office and most can’t pass it without playing with it.

I purchased this for two purposes. My own enjoyment and as a hands on tool my the Physics labs I conduct for homeschooled students from elementary to high school. It held up well to many enthusiastic hands!

la publicidad dice que la base esta fabricada de marmol G y pero es de madera, el tiempo de balanceo afirman que es de entre 50 y 60 seg pero son 20-30 Seg, por la información engañosa no recomiendo el producto, pero si quieres una base de madera y que el balanceo sea de 20-30 Seg lo recomiendo, los materiales metálicos son de buena calidad y las bolas están alineadas correctamente. no cuenta con las tuercas que se ven en la imagen en la base de los postes metálicos.

I spent a lot of time going over reviews of many other Newton's Cradles, and decided on this one with the marble base. The base is a good weight and it works as well as I had hoped. Once started, it will continue on its own for just over a minute before coming to a rest. The item was well packaged.

As described, well packed & presented *****

PÉSIMO producto, no llegó el que esperaba. No es el mismo de la publicación. La caja/empaque estaba rota, muy maltratada y es una caja diferente al de las imágenes. La base NO es de mármol y el movimiento dura entre 6 y 7 segundos.

solid piece of art work . very heavy made well nice display on the principles of physics. thanks