Diamond coated high speed drill bits 10 pcs - 1.3~1.4mm


10 pcs, diamond coated double end, high speed drill bits, drilling diameter:1.3~1.4mm, overall length: 40mm, shank: 0.7mm, NW:1.4g
Must add water for coolant, recommended speed around 20,000RPM
Suitable for drilling various jades and gems…

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  • Model: 232010
  • Shipping Weight: 0.0014kgs