Shank Size：M10 (10mm). Suitable for Opening Holes in Stone, Tile, Marble, Granite. Size：6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm 25mm 30mm 35mm 40mm 45mm 50mm 55mm 60mm. The Cutter Head Is Made of High-quality Diamond Powder Plating, Which Provides High Hardness, Sharpness, and Durability.
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