China Multipurpose Thread Triangular Drilling Bit Tools for Ceramic Tile Marble Glass Drill Bits, Find details about China Drill Bit, Glass Drill from Multipurpose Thread Triangular Drilling Bit Tools for Ceramic Tile Marble Glass Drill Bits
Specification for your reference ,any size can be customized:
Diameterφ4,φ5φ6,φ8,φ10,φ12
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