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 Philip Anderson

Very useful product with good durability. I've used this to remove rust, clean welds and do some metal work (steel, haven't tried it on aluminum yet). At 40 grit it cuts very quickly, doesn't get as hot as a grinding wheel and offers better control/smoother finish. In fact, the best part is the life of the abrasive and the overall durability of the wheel. Eventually I wore one out completely, but it took a long time. At the same time, the extremely long service life is primarily intended for flat surfaces. Obviously, the outer edge wears out faster, so you lose the ability to enter corners earlier and slow down. The attached photo shows the disc that was finally worn to the end. Again, it took some time, kept the balance the whole time, didn't splinter, everything held together, there was no sticking or other issues. I am very happy with this product, good value for money.