1,1x3,175x10mm 1,1mm 130° spiral carbide drill 3,175mm shank *new*

Small handy tungsten carbide drill it for various tasks. This drill bit is designed to be used for drilling PCB's but it will work on many other things as well. If nothing else one could clean/enlarge small valves or 3D printer nozzles. Remember to calculate proper feeds and RPM's. As a ground rule the smaller the drill the higher the RPM (extremely small drills do require about 100000RPM to operate as designed!).

When drill bits are purchased in a batches of 10pcs, drill bits are shipped in a handy plastic drill case (case holds 10x drill bits). 10pcs lot can be chosen from varying drill sizes according to your need.

Drill bit technical details:

• Drill diameter:
  • 1,1mm
• Drill tip angle:
  • 130° (our educated guess)
• Drill material:
  • Tungsten carbide (hard but brittle, so hand use/wobbly use in general is not recommended)
• Shank material:
  • Most likely some sort of a tool steel.
• Drill helix part length:
  • 10mm
• Drill flute angle:
  • 30° (our educated guess)
• Shank diameter:
  • 3,175mm
• Shank length:
  • 28,5mm
• Drill overall length:
  • 38mm
• Indicator ring color:
  • Might change according to the obtained batch