4.55mm PCB Drill Bit Set Pro Grade Tungsten Carbide Mini Drill Bits For Printed Circuit Boards CNC Milling 10 Pack 12mm Flute Length 38.10mm Overall Length Cemented Carbide Quality For Precision Drilling

4.55mm Tungsten Carbide PCB Drill Bit Set, 10-Pack
✔️ 4.55mm dia, 12mm flute, 38.10mm OAL, 3.175mm shank

This 10-piece set features pro-grade tungsten carbide drill bits designed for precise drilling on printed circuit boards. Ideal for PCB fabrication, CNC milling, and prototype work.

✅ 4.55mm diameter PCB drill bit for vias
✅ 12mm flute length for deeper holes
✅ 38.10mm overall length provides stability
✅ 3.175mm shank fits common collets
✅ 10-piece pack for quick replacements
✅ Cemented carbide construction for long wear resistance

💡 What is a handy use case for a 4.55mm PCB drill bit in CNC milling and board fabrication?

In practical terms, this carbide bit provides clean, precise holes in PCB substrates for vias and hardware mounting.

- Handy for precise vias and mounting holes on copper-clad boards
- High wear resistance extends tool life during prototyping
- Fits standard 3.175mm shank tooling and common CNC collets