UPX Series 0.3-3.0mm Carbide Micro Drill Bits with 1/8" (3.175mm) Shank ±0.005mm for PCB Drone

The UPX™ 1/8" (3.175mm) Shank High Precision Carbide Micro Drills are designed around the globally recognized 1/8-inch shank standard, making them fully compatible with PCB CNC drilling machines, desktop CNC engravers, and precision equipment worldwide.

Featuring a fixed shank structure where the shank diameter is larger than the cutting diameter, these micro drills deliver exceptional rigidity and eliminate runout, vibration, and micro drill breakage.      With cutting diameters from 0.3mm to 3.0mm in precise 0.05mm increments and a tolerance of ±0.005mm, the UPX™ series ensures consistent hole accuracy even on high-density PCB boards and precision components.

• Shank Diameter: 1/8" (3.175mm), fixed shank

• Cutting Diameter Range: 0.3–3.0mm

• Diameter Increment: 0.05mm per size (54 sizes total)

• Diameter Tolerance: ±0.005mm

• Point Angle: 118°

• Material: Ultra-fine grain solid carbide

• Coating: Special low-friction micro-drilling coating

• Compatible Holders: PCB collets, ER collets, CNC engraving spindles

• PCB prototyping and high-density circuit boards (FR4, epoxy boards)

• CNC engraving and desktop CNC machining

• Drone frames and lightweight aluminum structures

• Jewelry manufacturing and micro decorative parts

• 3D printer nozzle cleaning and precision maintenance

• Global 1/8" shank standard ensures universal compatibility

• Fixed shank design improves rigidity by up to 200%

• Cleaner holes with minimal burrs on FR4 and aluminum

• Extended tool life — up to 8× longer than conventional micro drills

• Trusted by PCB prototype shops, drone makers, and precision engineers worldwide