Links in video description to purchase, hopefully will get easier to find.
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Oh, I’d forgotten that Quindor did a video on these too. Saw it a while back.
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$40 a meter
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Unrelated but too damn funny to not share:
diy, non-professional production, perfectionists, please detour, this product is DIY and accessories, players need to have a certain degree of hands-on ability, please read carefully before shooting baby use functions and introduction, if you do not understand please consult the owner, do not blindly order!
Found here: mlnyitus Flexible RGB LED Lights Change Color Strip DIY Holiday Decorations AAA Kit Suitable for Cosplay Helmet DIY Modification Light Strips Superhero https://smile.amazon.com/dp/B08LZR2C3H