<Feature>: Vacuum brazed diamond technology provide better performance
Working without water, less heat generation and better finish quality
Longer working life, 5-10 times longer than normal quality
High efficiency, and less chipping
One side full coated and another side ring coated, a little convex suitable for multi-purpose
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All available diameter: 25mm 30mm 35mm 40mm 50mm, please contact us for the link. Thank you