---
product_id: 17402701
title: "PowerTRC Newtons Cradle Balance Balls 7 1/4\" | Science Physics Gadget | Desk Toys & Accessories"
brand: "powertrc"
price: "₩69155"
currency: KRW
in_stock: true
reviews_count: 13
category: "Power Trc"
url: https://www.desertcart.kr/products/17402701-powertrc-newtons-cradle-balance-balls-7-1-4-science-physics
store_origin: KR
region: South Korea
---

# Seamless kinetic energy transfer 7.25-inch precision balance Durable stainless steel & sturdy plastic PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories

**Brand:** powertrc
**Price:** ₩69155
**Availability:** ✅ In Stock

## Summary

> ⚡ Swing into brilliance — where science meets style!

## Quick Answers

- **What is this?** PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories by powertrc
- **How much does it cost?** ₩69155 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/17402701-powertrc-newtons-cradle-balance-balls-7-1-4-science-physics)

## Best For

- powertrc enthusiasts

## Why This Product

- Trusted powertrc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Premium Build Quality:** Crafted from mirror-finish stainless steel balls and a robust plastic frame, designed to last through countless stress-relieving swings.
- • **Executive Desk Statement:** Elevate your workspace with a sleek, science-inspired decor piece that sparks conversation and reflects your intellectual vibe.
- • **Stress-Busting & Meditative:** Transform idle moments into calming breaks—perfect for focus, mindfulness, and beating the daily grind.
- • **Mesmerizing Momentum Display:** Watch physics come alive with every swing, showcasing real-time energy transfer that captivates and educates.
- • **Perfect Gift for Science Enthusiasts:** A sophisticated, educational gadget that delights professionals and learners alike, ideal for birthdays or office gifting.

## Overview

The PowerTRC Newtons Cradle Balance Balls is a 7.25-inch executive desk toy that visually demonstrates momentum and energy transfer using durable stainless steel balls and a sturdy plastic frame. Perfect for office decor, stress relief, and educational purposes, it combines quality craftsmanship with a sleek design favored by professionals and science lovers.

## Description

desertcart.com: PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories : Toys & Games

Review: Good quality and large size - This cradle is nice but was to big for my small desk space. The base is solid but to my suprise the strings were thin and plastic however, If your looking for a large size cradle this is it.
Review: Its funcionality - My son loved it. Its durable and is entertaining when watching

## Features

- Gravity At Work | See before your eyes as the Newton Balls transfer fall and transfer weight across the gadget. Drop one ball or two balls. You can see the energy transfer in such an astounding way!
- Office Desk Decor | Show some character and express your love for science and physics with this decorating your office space. Can be meditative and fun to watch also!
- Educational & Classy | Experience the visual display of momentum. Share with your friends and family the exciting world of physics and science!
- Quality Materials | PowerTRC's Newton's Cradle is made of durable stainless steel, the metal balls are a reflective mirror finish and the majority of the gadget is made of sturdy plastic.
- Gift | Suitable for adults, serving as a fantastic tool for learning science, beating boredom, and relieving stress. It's a great choice for birthday and holiday gifts. Whether you place it on your desk or shelf, you can give it a little swing anytime you pass by, creating a delightful scene in your home or office!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ZJH3ZP6 |
| Best Sellers Rank | #104,478 in Toys & Games ( See Top 100 in Toys & Games ) #436 in Executive Desk Toys #1,233 in Educational Science Kits |
| Customer Reviews | 4.2 4.2 out of 5 stars (2,293) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 15.5 ounces |
| Item model number | SG_B00ZJH3ZP6_US |
| Manufacturer | PowerTRC |
| Manufacturer recommended age | 16 - 16 years |
| Product Dimensions | 8 x 7.25 x 5 inches |

## Images

![PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories - Image 1](https://m.media-amazon.com/images/I/51bP21DMXHL.jpg)
![PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories - Image 2](https://m.media-amazon.com/images/I/61Oal5vyqkL.jpg)
![PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories - Image 3](https://m.media-amazon.com/images/I/714bcLCfc-L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What material is this made of?**
A: The bottom part is made of pretty hard plastic. The balls and the ball holder is made of stainless steel. Works perfectly for me and looks like it will last long.

**Q: Does it go on forever? Or like an hour?**
A: An hour!  You're an optimist.  This thing is horrible.  It goes for about 15 seconds.  I'm returning it.  I remember these things from way back when and they would go for much longer.  I'd gladly spend twice as much for one that was decent, but this is a waste of time.

**Q: what are the stings made of?**
A: They appear to be nylon fishing line

**Q: I am purchasing these for a hotel and need 420 units - what is availability?**
A: As of 7 14 2023, we have over 700 pieces in stock ready to ship via Amazon.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality and large size
*by M***E on July 31, 2025*

This cradle is nice but was to big for my small desk space. The base is solid but to my suprise the strings were thin and plastic however, If your looking for a large size cradle this is it.

### ⭐⭐⭐⭐⭐ Its funcionality
*by A***Y on January 7, 2026*

My son loved it. Its durable and is entertaining when watching

### ⭐⭐⭐⭐ solid and works as it should
*by J***K on November 6, 2025*

works as it should and was a good addition to my science classroom.

## Frequently Bought Together

- PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories
- ScienceGeek Kinetic Art Asteroid - Electronic Perpetual Motion Desk Toy Home Decoration

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**Shop now:** [https://www.desertcart.kr/products/17402701-powertrc-newtons-cradle-balance-balls-7-1-4-science-physics](https://www.desertcart.kr/products/17402701-powertrc-newtons-cradle-balance-balls-7-1-4-science-physics)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-12*