Descriptions:Fits for drills, flex shafts, bench drill and hanging mill.Suitable for drilling holes on glass, shells, rocks, marble, stones, etc.Note: Add the coolant can increase work efficiency and extend service life.Specifications:Color: Silver ToneMaterial: Diamond, High Speed SteelDrill Bit Diameter: 0.8mm / 0.031-inchDrill Bit Length: 11mm / 0.43-inchShank Diameter: 0.6mm / 0.024-inchTotal Length: 25mm / 1-inchPackage Content:10 x Diamond Twist Drill Bits.
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