--- product_id: 212203446 title: "PowerTRC Newtons Cradle Balance Balls 7 1/4\" - Black Wooden Base" brand: "powertrc" price: "€ 83.62" currency: EUR in_stock: true reviews_count: 7 category: "Power Trc" url: https://www.desertcart.hr/products/212203446-powertrc-newtons-cradle-balance-balls-7-1-4-black-wooden store_origin: HR region: Croatia --- # 7.25-inch compact size Elegant black wooden base 5 precision steel balls PowerTRC Newtons Cradle Balance Balls 7 1/4" - Black Wooden Base **Brand:** powertrc **Price:** € 83.62 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your desk game with kinetic elegance! ## Quick Answers - **What is this?** PowerTRC Newtons Cradle Balance Balls 7 1/4" - Black Wooden Base by powertrc - **How much does it cost?** € 83.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/212203446-powertrc-newtons-cradle-balance-balls-7-1-4-black-wooden) ## 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 - • **Compact Yet Commanding:** Perfectly sized to fit any professional desk without clutter - • **No Assembly, Just Action:** Ready to use out of the box—instant productivity booster - • **Stress Relief Meets Style:** Sleek design that calms your mind and elevates your workspace - • **Mesmerizing Physics in Motion:** Experience Newton’s third law live on your desk - • **Conversation Starter & Brain Teaser:** Impress colleagues and spark curiosity with every swing ## Overview The PowerTRC Newtons Cradle Balance Balls feature five steel spheres suspended on a stylish black wooden base, demonstrating Newton’s third law through smooth, addictive motion. Measuring 7.25 inches, this executive toy requires no assembly and serves as a sophisticated stress-relief tool and conversation piece for professionals and science enthusiasts alike. ## Description The classic desk accessory is both art-in-motion and proof of Newton's Principle that "action and reaction are equal and opposite." Lift one of the 5 steel balls at either end and let it swing back--the ball at the other end will swing out the same distance as the one you lifted proving the scientific theory and mesmerizing you for hours. Use it to waste time relieve stress tune out boring coworkers or schooling youngsters in physics. Fair warning: it's totally addictive! 7.25".0 Review: Beautiful scientific tool - Loved this stress relief tool Review: Garbage. Received broken. Never picked up or refunded. - Received broken never picked up fir return or refunded. ## Features - The classic desk accessory is art-in-motion - Newton's Principle that "action and reaction are equal and opposite." - Use it to waste time - relieve stress ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00ZJH3ZP6 | | Age Range (Description) | kids,teen,adult | | Age Range Description | kids,teen,adult | | Best Sellers Rank | #98,552 in Toys & Games ( See Top 100 in Toys & Games ) #2,592 in Science Toys & Kits | | Brand | PowerTRC | | Customer Reviews | 4.2 out of 5 stars 2,176 Reviews | | Educational Objective | relieve stress | | Is Assembly Required | No | | Item Dimensions | 20.3 x 18.4 x 12.7 Centimeters | | Item Weight | 0.44 Kilograms | | Item dimensions L x W x H | 20.3 x 18.4 x 12.7 Centimeters | | Manufacturer | WESTMINSTER INC. | | Manufacturer Part Number | B00ZJH3ZP6 | | Material | Steel | | Minimum Recommended age | 60.00 | | Model Number | SG_B00ZJH3ZP6_US | | Set Name | PowerTRC Newton's Cradle Balance Balls (5 Ball, Black Wooden Base) | | Size | 7.25 x 8 x 5 inches | | Theme | Science | | UPC | 852093005871 | | Unit Count | 5 Count | ## Product Details - **Size:** 7.25 x 8 x 5 inches - **Brand:** PowerTRC - **Theme:** Science - **Age Range (Description):** kids,teen,adult - **Item dimensions L x W x H:** 20.3 x 18.4 x 12.7 Centimeters ## Images ![PowerTRC Newtons Cradle Balance Balls 7 1/4" - Black Wooden Base - Image 1](https://m.media-amazon.com/images/I/714bcLCfc-L.jpg) ![PowerTRC Newtons Cradle Balance Balls 7 1/4" - Black Wooden Base - Image 2](https://m.media-amazon.com/images/I/61Oal5vyqkL.jpg) ![PowerTRC Newtons Cradle Balance Balls 7 1/4" - Black Wooden Base - Image 3](https://m.media-amazon.com/images/I/51bP21DMXHL.jpg) ## 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 ### ⭐⭐⭐⭐⭐ Beautiful scientific tool *by J***N on 1 November 2025* Loved this stress relief tool ### ⭐ Garbage. Received broken. Never picked up or refunded. *by M***T on 9 February 2022* Received broken never picked up fir return or refunded. ### ⭐⭐⭐⭐⭐ Will order for someone as a gift *by P***5 on 12 April 2026* Ordered over 2 years ago for my daughter and son in law..My daughter put it together Loved it! ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/212203446-powertrc-newtons-cradle-balance-balls-7-1-4-black-wooden](https://www.desertcart.hr/products/212203446-powertrc-newtons-cradle-balance-balls-7-1-4-black-wooden) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-16*