Metabo 6-Inch x 0.040-Inch Metal Cutting Disc - 50-Pack for Angle Grinders | Perfect for Steel, Iron & Metal Fabrication Projects

Flexible and thin... yet last just as long (or longer) than the slightly thicker and a lot more expensive DeWalt cut off wheels. When new and at their full 6" diameter, they have a bit of vibration to them because they are thin. But once you start cutting that goes away and these work well. Even though they are thin, I have yet to have one come apart or lose chunks. That slight vibration was unnerving at first, but has never proved to be a problem in the 10 blades I used.So not only were these blades cheaper in price, their performance was on par, if not better, than the DeWalt's.