These grinding wheels are designed specifically for the Oregon 620-120, 520-120, and 410-120 Bench Grinders. The wheels leave a sharper and cleaner finish on the cutters.
When you sharpen over a 100 chains a month. I got tired of always dressing the stone and always making adjustments. These last so much longer and don’t seem to generate as much heat on the tooth. Well worth the money.
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