Has anyone here ever bought any 405 nm laser pointers from "demonerrr" on eBay?
The price is very attractive, and the user has sold 365 of them so far, but I'm not sure how they compare to LPF standards. Or are they all about the same?
The price is very attractive, and the user has sold 365 of them so far, but I'm not sure how they compare to LPF standards. Or are they all about the same?
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