What material is this made of?

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.

Does it go on forever? Or like an hour?

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.

what are the stings made of?

They appear to be nylon fishing line

I am purchasing these for a hotel and need 420 units - what is availability?

As of 7 14 2023, we have over 700 pieces in stock ready to ship via Amazon.

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PowerTRC Newtons Cradle Balance Balls 7 1/4 inch

Product ID: 333599235

Details

Age range (description)
Kid
Brand
PowerTRC
Item dimensions L x W x H
20.3 x 18.4 x
Size
1 Count (Pack
Theme
Physics

🔄Smooth momentum transfer

⚖️7.25-inch precision balance

🛡️Durable stainless steel & sturdy plastic

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₩90929

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Swing into science — where style meets momentum!

DESK STATEMENT - Elevate your workspace with a sleek, reflective mirror finish that sparks curiosity.
GIFT OF GENIUS - A timeless present blending fun, learning, and style for all ages.
PHYSICS IN MOTION - Watch energy conservation and momentum come alive with every swing.
EDUCATIONAL ELEGANCE - Ideal for classrooms or home, turning complex science into captivating visual lessons.
STRESS RELIEF RITUAL - A meditative, calming gadget perfect for focus breaks and ADHD-friendly moments.

The PowerTRC Newtons Cradle Balance Balls is a 7.25-inch executive desk toy crafted from durable stainless steel and sturdy plastic. It visually demonstrates physics principles like energy conservation and momentum through smooth, mesmerizing ball swings. Perfect for office decor, educational use, and stress relief, it’s a stylish, interactive tool that appeals to science enthusiasts and professionals alike.

Specifications

ASIN	B00ZJH3ZP6
Assembly Required	No
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#115,023 in Toys ( See Top 100 in Toys ) #1,694 in Educational Science Kits
Color	#1 Newtons Cradle Silver
Customer Reviews	4.2 4.2 out of 5 stars (2,206)
Date First Available	23 August 2015
Educational Objective(s)	Physics
Item model number	SG_B00ZJH3ZP6_US
Manufacturer recommended age	0 - 16 years
Material Type(s)	Metal
Product Dimensions	20.32 x 18.42 x 12.7 cm; 440 g
Remote Control Included?	No

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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.

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