1/1.3/1.5/1.8/2/2.2mm Diamond Coated Tipped Core Drill Bit for Jade Agate Stone Jewelry Glass Drilling Ceramics Glass Hole Saw

1/1.3/1.5/1.8/2/2.2mm Diamond Coated Tipped Core Drill Bit for Jade Agate Stone Jewelry Glass Drilling Ceramics Glass Hole Saw

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