amazon basics Neoprene Dumbbells, Set Of 2, (4.5 Kgs Each ) - Navy Blue

amazon basics Neoprene Dumbbells, Set Of 2, (4.5 Kgs Each ) - Navy Blue

Q: Are the weights themselves solid steel under the neoprene?

The 'brutto'- weight of one 1Lb-dumbbell is Wb = 460.9g. To know the volume I put it in the Pyrex measuring cup with 800mL of water - the water level becomes 890mL (this measuring is not exact but I've what I have) - so V = 90mL One mL of water is 1cm3. I prefer cgs-system (cm - g - sec), not SI. To guess the metal I've to take away neoprene volume Vm = V - Vn. In assessment of geometry I replaced two hexagons with their corresponding circles and all round squares with straight angled ones. I guess neoprene is h=2mm thick including gaps. Vn= ~ h x 4 x (3.14 x D1^2/4) - 2 x (3.14 x Do^2/4) + 2 x 6 x Yo x Zo + 3.14 x Do x Z = 0.2cm x 3.14 x 4.3cm^2 - 3.14 x 2.4cm^2/2 + 2 x 6 x 2.1cm x 1.6cm + 3.14 x 2.4cm x 8.6cm = 0.2cm x 58.09cm2 - 9.05cm2 + 40.32cm2 + 64.84cm2 = 30.84cm3 . The weight of the metal is the 'netto'- weight Wo = 454g. The density is: d = Wo / Vm = 454g / (90cm3 - 30.8cm3) = ~7.7g/cm3 - The Cast iron density is: d(Fe) = 7.87g/cm3. I could congratulate myself with a pretty good guess that the metal inside this 1Lb-dumbbell is a kind of cast iron. Though stainless steel is in the same range but I think they took the cheapest variant. So probably if neoprene is not hermetic enough then the iron inside this dumbbell could rust. I wiped it dry after I submerged it in a water. I don't think that my sweat would penetrate and humidify that iron to rust unless it's already did rust which I doubt. At least I know for sure that it's not lead (Pb) inside. It's not a copper (Cu) alloy which is heavier and much less cheap. Thanks, China!

Q: How can I order the stand alone?

Don’t order the stand. It’s the most terrible design for a stand ever created.

Q: Is the grip on these easy for small hands?

The grip IS NOT designed for small hands. Purchased the 15lb s and had to return bc they aren’t easy to hold. My hand barely closes around them. I don’t want to crush my chest bc I dropped the weight doing presses.

Product ID: 93469979

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Details

Brand
amazon basics
Colour
Navy Blue
Item Weight
4.41 kg
Material
Cast Iron
Special Feature
No-Roll Head

🎨Navy blue neoprene for stylish grip

💪4.5 kg each for balanced strength

🛑Hexagonal no-roll design for safety

Frequently Bought Together

Amazon Basics Neoprene Dumbbell Hand Weights for Exercise and Muscle Toning

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Description

🏋️‍♂️ Elevate your workout game with style and stability!

STAY PUT STAY FOCUSED - Hexagonal shape prevents dumbbells from rolling away, keeping your space safe
QUICK WEIGHT IDENTIFICATION - Color-coded ends with printed weight numbers for seamless workout flow
SECURE SWEAT RESISTANT GRIP - Neoprene coating ensures a firm hold during intense workouts
CONFIDENCE BACKED BY WARRANTY - 1-year limited warranty for peace of mind on your fitness journey
PERFECT PAIR FOR HOME STUDIO - Set of 2 ideal for strength and resistance training anywhere

Amazon Basics Neoprene Dumbbells come as a set of two 4.5 kg weights, featuring a durable cast iron core with a sweat-resistant neoprene coating in sleek navy blue. Their hexagonal shape prevents rolling, while color-coded ends and printed weight numbers allow quick identification. Designed for both home and fitness class use, these dumbbells combine functionality with ergonomic comfort, backed by a 1-year limited warranty.

Specifications

Brand	amazon basics
Colour	Navy Blue
Item Weight	4.41 kg
Material	Cast Iron, Neoprene
Special Feature	No-Roll Head
Product Dimensions	21L x 10W Centimeters
Style	4.5 KGS Each
Handle Diameter	1.25
Handle Material	Neoprene
Number of Pieces	2
UPC	843639101942 841710155839 840095875585
Global Trade Identification Number	00841710155839
Manufacturer	GADAIPUR RANDHAVA MASANDA JALANDHAR PUNJAB 144002, SUN MALLEABLE PRIVATE LIMITED
Manufacturer	SUN MALLEABLE PRIVATE LIMITED
Country of Origin	China
Item model number	DB1001
ASIN	B01LR5S6HK

Have a Question? See What Others Asked

Are the weights themselves solid steel under the neoprene?

How can I order the stand alone?

Is the grip on these easy for small hands?

Where are these made?

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