Diamond Coated Twist Drill Bits 0.8mm 1mm 1.2mm 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm. Subtype: Diamond Bits. Applicable machine: bench drill/hanging mill. The utility model relates to a miniature diamond jade bit drilling tool, which is made of Fried Dough Twists drill and diamond powder.
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