They should and will last as good as any other copper brushes of this type from other companies. Which is not good at all. But that's the nature of brass brushes on a rotating machine. So for the price it's good value for money. Will they stand up to a lot of wear and tear? no Like the expensive Dremel brands. You might as well buy a bigger pack of these at a better price if they're falling apart anyway. Use a slower setting or the small strands will fly off. I'd give them 5 stars if they impressed me with their durability and while like I said there's nothing wrong with them compared to other brands, they're still just decent. So I've given it a decent rating, especially considering its low price.
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