Saws with hardened teeth
prices on 7 models— a feature of hardened teeth (usually they have a characteristic dark colour that differs from the colour of the blade) is a very high hardness. On the one hand, thanks to this, the hardened canvas does not dull for a long time — many times longer than usual; on the other hand, it is impossible to sharpen dull teeth on your own, you will have to change the worn blade (or even the entire hacksaw).
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