Review on 💯 High-Quality Flap Discs 20 PCS 4.5 Inch - 40 Grit Grinding Discs, Assorted Sanding Grinding Wheels with Aluminum Oxide Abrasives - Grinder disc for Optimal Results by Lance Levatte

So they're not as good as $5 discs, but they cost less than a dollar each. But for the price, they work great. I've made good use of the two I've used so far and can't complain (cleaning an old trailer of repaints and modifications). I've seen comments about how quickly they wear out on welds and cuts and my first thought was the old adage "grinder and paint make you the welder you're not". They work well for what they are intended for. If you use the tool correctly, they seem to work fine.