I have been a welder for over 40 years and these are by far the best, most durable and strongest cutting blades I have ever used. I've used the ones that are literally 5-7 times more expensive but they don't work that well. After my first purchase I bought two more lots because they are so outstanding. That's all I'll ever use and their sanding pads are just as good. Warning, always use protective gear when using these discs ie a face mask over goggles and welding gloves because sooner or later you will meet even the best and I had a serious injury from not being careful enough. So far there have been no failures with this product, but any disc can jam and explode under the right conditions.
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