Type: Drill Bits & Chucks. Sub-Type: Marble Drill Bits. 1Pc Diamond Coated Drill Bit. Drill bit diamter:0.4mm,0.5mm,0.6mm,0.7mm,0.8mm,0.9mm,1.0mm,1.1mm,1.2mm,1.3mm,1.4mm,1.5mm,1.6mm,1.8mm,2.0mm,2.5mm,3mm.
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