Drill Bits Diamond Coated Twist Drill Bits Polishing Professional Size 0.8-2.5mm Product Information: Name: Drill Bits Diamond Coated Twist Drill Bits Polishing Professional Size 0.8-2.5mm Material: HSS + Diamond Applicable tools: electric drill, bench drill, electric mill, hanging mill. Scope of application: Commonly used for punching on jade, metal, agate, emerald, gem, pearl, pebbles and other materials. Note: Please use water cooling during operation to extend the useful life of the drill. Applicable machine: bench drill / crane grinder Size: 0.8mm 1mm 1.2mm 1.5mm 2mm 2.5mm
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