They are as heavy as any other shovel you can find at any price point. I can't guarantee if they are pure copper or not, but my tester shows that from the end where the screws are located to the open end that goes around the terminal post, they have no resistance. I checked the resistance in several places and found none. The neodymium magnet does not stick to it, therefore no iron content. I'm not sure what type of copper it is, but it can't be "pure" copper as it isn't soft and doesn't bend easily. So it has to be some kind of copper alloy to be that hard.
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