🔥 High-Performance Ceramic Flap Disc, 4-1/2X7/8, Grit 60 - Unleash the Ultimate Grinding Power Review

Does what it's supposed to, but you should keep it for its intended purpose. They're not cheap, but once you try them, you'll wonder how you ever managed without them.

Based on my research and the namesake, I expected more life on these discs. Smoothing the edges of 1/4" bent aluminum and armoring the tops. It didn't seem to take very long for almost $20.

Of course there are cheaper rounded grinding wheels, but in terms of quality I think PFERD is the best. They don't wear out as quickly as others and get the job done very quickly. Highly recommended!