I’ve run a lot of flap discs through my angle grinder over the years, and I can spot a cheap one the second it hits metal. So when I grabbed the WORKPRO 20-Pack Flap Discs, I wasn’t expecting much at this price point – but these things genuinely surprised me. The zirconia abrasive cuts aggressive and stays sharp longer than I expected, and having all four grits – 40, 60, 80, and 120 – in one pack means I’m moving from heavy stock removal straight through to finishing without hunting around the shop. The T29 angle digs into welds and contours like it should, and the 7/8-inch arbor fit my grinder perfectly, no wobble, no drama. Twenty discs, real-world performance, solid value. These aren’t shelf queens – they’re built to work.