Only 1 backup sent. As can be seen in the photo, only one sealed fuse was installed. This is because the packaging itself also says '3 pack'. If I didn't have to use a fuse to fix an emergency operation I would return it and look for another brand. I needed 3 for 3 different things and only got one. So far it's holding up and the device I've used it on still works. If something breaks prematurely I will update.
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