CBN grinding wheel. no wear, always a flat surface, no sparks ..
CBN Wheel - Side & Rim Coated - Turners Retreat
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China Low price for Carbide Price - CBN Grinding Wheels High Grinding Efficiency for Grinding Ceramic, Cemented Carbide, Ceramic, etc. – Metcera factory and manufacturers | Metcera
Rob Cosman's CBN Grinding Wheel: 6-inch | RobCosman.com