I had high expectations but wasn't convinced by the quality. And how difficult would it be to include simple instructions on how to attach spikes?! It looks like you'll have to abandon the two screws that attach to the shoe and try to screw the spike over it. This leaves an awkward gap, but I can't see any other way than removing those screws and making the metal part rattle. Bad design and worse, they don't have easy instructions. I would keep looking if I were you.
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