Here is a quick video comparing the old school cast iron dumbbells to the newer rubber coated dumbbells. Which do you prefer?

Rubber Hex Dumbbells
25 - https://amzn.to/3iBz9wB
30 - https://amzn.to/3ZCw147
35 - https://amzn.to/3vY39Wu
40 - https://amzn.to/3k8GMuN

Cast Iron Dumbbells
25 - https://amzn.to/3GZ1ztL
30 - https://amzn.to/3GAqt1z
35 - https://amzn.to/3XsujR7
40 - https://amzn.to/3iyzIr5

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