[3.85mm]

[4mm]

[4.1mm]

[4.4mm]

[3.8mm]

[3.9mm]

[4.2mm]

Features:
Cutting Edge Diameter (CED): 4mm / 0.157"
Cutting Edge Length: 12mm / 0.472"
Shank Diameter: 3.175mm / 1/8"
Overall Length: 38.1mm / 1-1/2"
Angle Point: 165 Degree
Material: Tungsten Carbide
Flute Type: Spiral


Description:
Long Tool Life: Made from tungsten carbide, high hardness, high wear resistance, high strength, resistance to bending, anti-impairment, long service life.
Spiral Flute Bits: Spiral flute drill bits reduce cutting force and prevent drill broken, improve the drilling accuracy. Large drill bit chip space, chip resistance, chip smooth, small drilling heat.
Precision: With with sharper cutting edge, milling groove and clean surface, the carbide PCB drill bits can work quickly and cleanly, no glitches or scrap left.
Applications: Great for PC boards, plastics, fiberglass, wood, soft metals. Suitable for PCB drilling machines, engraving machine, CNC and high precision special drilling equipment.
Tips: The drill bits are too tiny, so it is very fragile for handling. Please be careful and take good control of your CNC speed.


Package Included:
1pcs x PCB Drill Bits