i thought the entire purpose was to stay in motion until stopped . do they stop on their own?

yes, they will do stop on their own after 50-60 seconds

Does this thing get rusted?

No. We have had ours for a few years now and it is still in like new condition. No rust

What is the length? The title states 11" while the product descriptions specifies 9".

The length of the marble base is 9.06 inches, the width is 6.69 inches, and the diagonal length of the marble base is about 11 inches.

we had one before from a mall and the balls were tangled so we couldn't use it does this one have the balls where they don't tangle ?

The one I ordered through Amazon was packaged very carefully with each ball and string wrapped in plastic. The strings were not tangled. The unit has not tangled; the balls are heavy weight and seem to be good quality. I am sorry that you had that experience. I enjoy the cradle so much; it is intriguing.

Cerropi Large Newtons Cradle Pendulum With 7 Balls Physics Perpetual

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

€ 119.36

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to France.

Secure transaction

Description

⚡ Swing into focus and impress your workspace with kinetic elegance!

ELEGANT BEECH WOOD BASE - A natural, polished foundation that elevates your desk’s style and stability.
ENDLESS MOMENTUM MASTERY - Experience mesmerizing 50+ seconds of smooth, perpetual motion that captivates and calms.
STRESS RELIEF MEETS SCIENCE - Perfect for office fidgeting or intuitive physics demonstrations that spark creativity and focus.
GIFT READY PACKAGING SUPPORT - Arrives in exquisite protective packaging with a 1-year warranty and responsive customer care.
PREMIUM INDUSTRIAL CRAFTSMANSHIP - Built with 8mm chromed steel bars and 20mm steel balls for unmatched durability and sleek aesthetics.

The CERROPI Large Newton's Cradle features 7 perfectly aligned 20mm steel balls suspended on 8mm chromed steel bars, delivering over 50 seconds of smooth swinging motion. Mounted on a stylish beech wood base, this executive desk toy combines scientific precision with premium materials to provide a durable, visually striking stress-relief and educational tool. Ideal for professionals and educators alike, it comes with protective packaging, a 1-year warranty, and exceptional customer support.

Specifications

ASIN	B07Y5S5YWR
Age Range Description	Adult/Kid
Best Sellers Rank	#21,102 in Toys & Games ( See Top 100 in Toys & Games ) #195 in Educational Science Kits
Brand Name	CERROPI
Color	Silver
Customer Reviews	4.5 4.5 out of 5 stars (768)
Educational Objective	Logical Thinking
Global Trade Identification Number	00715668926103
Included Components	1PC Newtons Cradle
Indoor Outdoor Usage	Indoor
Item Dimensions	9.06 x 6.69 x 6.69 inches
Item Type Name	science-kits
Item Weight	1200 g
Manufacturer	CERROPI
Manufacturer Maximum Age (MONTHS)	720
Manufacturer Minimum Age (MONTHS)	60
Manufacturer Part Number	2057
Manufacturer Warranty Description	60 Day Warranty Against Manufacturer Defects
Material Type	Nylon, Steel, Wood
Model Number	2057
Number of Packs	1
Number of Players	1
Operation Mode	Manual
Power Source	Manual
Set Name	Newton's Cradle with 7 Balls
Size	Large
Supported Battery Types	No batteries required
Theme	Physics
UPC	715668926103
Unit Count	1 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.