5PCS Diamond Coated Drill Bits. 0.8/1/1.2/1.5/1.8/2/2.5mm Diamond Coated Drill Bits with 2.35mm Shank Glass Jade Amber Jewelry Glass Diamond Drill Bit. Application: Perfect for drilling glass, blocks jars, tile bottles, fiber glass porcelain tile, vitrified, brick and stone.
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