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Title: Definitely a quality difference!
Review: I'm just getting into woodworking etc and got a Rigid orbital sander for my birthday. I decided to stock up on sanding discs and after reading the reviews bought these. My sander came with two 80 grit discs, and I started using those but quickly got frustrated because they didn't work at all on the rough hewn boards I was sanding. Put one of the Mirka 80 grit discs on my sander and it not only did a great job, but lasted really well and didn't shred up like the other ones did. I would definitely recommend the Mirka discs and for the price you can't really beat it.
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