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Kind tips: This corundum grinding head belongs to low-grade sand. There will be size shrinkage, which is an error. The error is 2- About 3mm. If you need a high-quality sanding head, please contact customer service for consultation~
red corundum grinding head: The hardness is similar to that of white corundum, but the toughness is higher than that of white corundum. The abrasive cutting edge is sharp, the edges and corners are maintained well, and the durability is high. Uses: Suitable for grinding quenched steel, alloy steel tools and workpieces
