If you've ever tried to polish aluminum you've had to sand bare metal with a variety of grit papers, from coarser grit paper to something very, very good. This can get expensive if you buy a pack of each variety individually. So I tried this series out on a badly scratched aluminum alloy truck wheel instead. I hand sanded from 400 grit to 3000 grit. I can say without a doubt that the sandpaper held up as well as any other paper I've used when hand wet sanding. There are no regrets here! I don't think the blades are big enough for my fine sander, but they fit my hand sander perfectly.
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