If you're used to HF's incredibly cheap (bidirectional) cutting discs, you'll be surprised. They are much more break-resistant than cheap ones; This is important for you if you are tired of being hit by cheap wheels flying sideways. They're also twice as thick, but still work better as a cut-off than as a grinder. They are slightly convex, which together with the increased thickness makes the wheel stiffer. They're pretty rough, so good luck smoothing out cuts on the fly.
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