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Got this for my husband for Christmas. He likes spinny go weeeee. But they're hard to take off without scratching the material.

Came free with a bundle, however it was somewhat difficult to change them out with the tools i had

Don't buy if you don't want to scratch your screwdriver. It's very hard to unscrew the one it sold with. I recommend using wrench, cloth and rubber gloves, don't even try without them. Ensure to fit it tight, otherwise it won't spin as good as out of the box.

I've tried to fit these following the instructions but the current end cap on my screwdriver is just too tight. Either that or I'm doing it wrong, but I'm not the only one struggling, judging by the comments on the YouTube video. Not super disappointed because I think this was a freebie or something I added on a whim to make up the shipping threshold, but it's still been a waste of time for me.

After swapping the original top. The fidget never spinned like it use to.