Review on KSEIBI 50 Pack Ultra Thin Angle Grinder Wheel 646004 Cut-Off Discs - 4 1/2 Inches, 0.040" Thickness, 7/8" Arbor - Ideal For Precise Cutting Of Metal And Stainless Steel by Ronnie Dunn

These are exceptional! They are brittle, like all cut off wheels, but they can cut well. I took a chance and bought this "mondo” pack to rough out an anvil. The picture shown took 19 wheels, and I had 4 explode. The explosions were from poor handling and not the fault of the wheel. Good PPE is a must when using any cut off wheel. I had my full face, welding gloves, and welding leather on, so the "explosions” just bounced off.These hold up as well as any that I have used and cutting old rail is a good test. I still have a bunch of 50% wheels only because I needed full diameter to make deeper cuts. I WILL buy these again because they hold up. They are just as good as Sait, Dewalt, and Makita wheels.