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10pc/lot Crystal Glass Jade Jewelry Polishing Diamond Coated Twist Drill Bit Set Drill Fine Diamond Needle Twist Drill Bits

US $3.88 - 5.27
US $5.88 - 7.98 -34%

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Item specifics

  • Brand Name: URANN
  • Type: Core Drill Bit
  • DIY Supplies: Metalworking
  • length: 30-50mm
  • is_customized: Yes
  • Use: Wood Drilling
  • Material: Diamond
  • Model Number: KI87
Product Description

Glass Jade Polishing Diamond Coated Twist Drill Bit Set Needle Drills Jewelry Agate Fine Diamond Needle Twist  Drill Bits

Crystal/Jade/Agate/Drill Bit
Micro diamond jade drill bit drilling tool, this product is made of twist drill and diamond powder. Suitable for drilling of jewelry, ceramics, glass, and semiconductor materials.
Specifications are: 1.0mm 1.2mm 1.5mm 2.0mm 2.5mm 3.0mm etc.
When using, please note: 1. Water-cooled; 2. High-speed (more than 20,000 rpm); 3. Smooth, do not shake, with hanging grinding, table grinding, speed small bench drill; 4. Light pressure.
  Material: Emery + high speed steel twist drill = punch needle
  Applicable machine: bench drill/hanging mill
  Use range: jade, metal, agate, jade, gemstone, pearl, pendant, pebble can be used (hardness of material is different)
  Use cautions:
1. You can shorten the total length first, which can reduce the shaking
2. You can use a vise to subtract a little from the head to prevent skidding

Package:10pc drill bit