Material (Tungsten Carbide)

Almost universally made from solid tungsten carbide, a very hard and brittle material.

Micro Sizes (0.1-1.0mm)

The kit includes a range of extremely small diameters, typically in 0.1mm or even finer increments (e.g., 0.1mm, 0.2mm, ..., 1.0mm).

Fixed Shank (often 3.175mm / 1/8")

Despite the varying drill tip diameters, most PCB drill bits feature a standardized shank diameter (commonly 3.175mm or 1/8 inch).

Spiral Flute Design

Features a spiral flute that aids in chip evacuation.

Sharp Cutting Edge

Designed with a very sharp cutting edge and precise geometry.

High Precision Manufacturing

Manufactured using high-precision equipment to ensure exact diameters and concentricity.

Anti-Bending & Anti-Impairment

Despite being brittle due to hardness, they are designed to have good bending resistance for their size.

Storage Case

Usually comes in a protective plastic or metal case with individual slots for each drill bit.

Application Specific

Optimized for drilling various PCB materials (FR-4, CEM-3, carbon fiber, etc.) and plastics.