Review on 🛠️ Benchmark Abrasives 4.5-inch x 7/8-inch Premium Zirconia Flap Disc Grinding Wheel 40 Grit Type 29 - Pack of 10 by Lyon Forrest

I'm a welder and fabricator and like to have my own flap discs in case we run out or just don't want to look for a boss to get more and I'm very happy with them, a good one Price-performance ratio. I bought the standard grinders and they last a few days but I just got the large size and put one on my grinder today so we'll see how long it lasts. The only thing is that it doesn't spin as smoothly as, say, a Dewalt wheel. I have to grind a lot of welds to keep my work pieces flat or smooth and when I use a more expensive wheel I definitely feel the difference but it really doesn't matter. I train a lot and it doesn't bother me. The attached image is a standard size versus a high density size.