sourcing map 20 Pcs 0.8mm 1mm Diamond Twist Drill Bits High Speed Steel for Glass Sea Shells Stone Tiles

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  • Specifications - Drill Bit Dia. 0.8mm 0.031-inch, 1mm 0.04-inch; Drill Bit Length 11mm 0.43-inch; Shank Dia. 0.6mm 0.024-inch, 0.7mm 0.027-inch; Total Length 25mm 1-inch, 28mm 1.1-inch; 10 x 0.8mm Diamond Twist Drill Bits; 10 x 1mm Diamond Twist Drill Bits
  • Material - Diamond coated high speed steel(HSS) is made by spiral technology, has both toughness and hardness, is not easy to break. The drill bit is sharp, and is easy for chip removal.
  • Application - Suitable for drilling small holes on glass, metal, sea shells, jade, pearls, marble, stones, drywall and son on. Due to the different hardness of the material, the effect is also different.
  • Notice - When drilling, it is necessary to add cutting fluid in time to lubricate and cool down, which can get a better drilling hole wall, extends the service life and drilling accuracy.

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