Okay, so I've been through my fair share of flap discs over the years, and these Benchmark ones? Total game-changer. First off, they last WAY longer than the overpriced name-brand stuff at hardware stores.

The zirconia material is no joke - cuts through steel like butter but leaves a surprisingly smooth finish. I use the 60-grit for most projects and they hold up even when I'm being a bit... aggressive with the angle grinder.

What really shocked me was how well they work on stainless steel. Usually that eats up discs like crazy, but these keep going. The price for a 10-pack is insane compared to what I used to pay.

Only thing - when brand new they feel a bit 'fluffy' until you break them in. But honestly that makes them perfect for finishing work where you don't want deep scratches.

If you weld or fabricate metal regularly, just buy these. I've converted my whole shop crew and we're saving hundreds on consumables every month.