#80–#56 Micro Carbide Drill Bit Set, 50 Pc, 25 Sizes, 1/8" Shank | PCB, Models, Plastics & Precision Drilling

#80–#56 Micro Carbide Drill Bit Set – 50 Piece Numbered Drill Assortment

This 50-piece factory resharpened solid carbide micro drill bit set includes 2 drills each of 25 numbered sizes, covering #80 through #56. It is a useful general-purpose small-hole drilling assortment for users who need many closely spaced micro drill sizes in one organized set.

This size range is useful for PCB drilling, electronics prototyping, model making, plastics, resin, polymer clay, beads, crafts, small CNC drilling, precision hobby work, and other small-hole drilling applications where controlled diameter selection is important.

These are factory resharpened solid carbide drills. They are not new production drills, but they offer a practical lower-cost alternative to new carbide micro drills for users who need a broad numbered size range.

Best For

• PCB drilling and electronics prototyping
• Small CNC drilling and desktop CNC work
• Model making, miniatures, and precision hobby work
• Plastics, resin, polymer clay, beads, and craft materials
• Small precision holes in suitable materials
• Checking, matching, or stepping through numbered drill sizes
• Users who want a broad numbered drill range instead of buying each size individually

Set Summary

Included Sizes – 50 Pieces Total

Includes 2 pieces each of the following 25 numbered drill sizes:

Benefits

• 50-piece set provides a backup drill in every included size
• 25 numbered drill sizes from #80 through #56
• Useful range for PCB work, model making, crafts, plastics, and precision small-hole drilling
• Factory resharpened carbide offers a lower-cost alternative to new carbide drills
• Indexed storage case helps keep the sizes organized
• Standard 1/8" shanks fit many PCB drill holders, CNC collets, rotary tools, pin vises, and precision drilling setups

Factory Resharpened Solid Carbide Value

These are factory resharpened solid carbide drills, offering a practical lower-cost alternative to new carbide micro drills. They are professional-style micro drills with standard 1/8" shanks, intended for stable, accurate drilling setups where rigidity and precision matter.

Unlike lightweight hobby-style wire drill assortments, these are solid carbide micro drills with full 1/8" shanks and are packaged in an indexed storage case for organized size selection.

Use note: Solid carbide drills are precision tools that require a stable setup. For best results, use a pin vise, drill press, milling machine, micro drill fixture, CNC machine, or other controlled holder that keeps the workpiece square to the drill. Avoid handheld electric drills, side pressure, bending, or forcing the drill.

Application Notes

This set is intended for precision small-hole drilling in suitable materials. It may be useful for PCB substrates, plastics, resin, polymer clay, beads, model materials, and other non-hardened materials where small numbered drill sizes are needed. Because solid carbide is hard and brittle, use a rigid setup, light pressure, and appropriate speed/feed for the material.

For best results, step up gradually when enlarging an existing hole. Do not force the drill, and avoid side loading, flexing, or using the drill like a reamer.

Frequently Asked Questions

Are these new drills?
No. These are factory resharpened solid carbide drills. They are a practical lower-cost alternative to new carbide drills.

How many drills are included?
This set includes 50 drills total: 2 pieces each of 25 numbered sizes from #80 through #56.

Are these numbered drill sizes?
Yes. This set includes numbered drill sizes #80 through #56, from .0135" through .0465".

Are these solid carbide or carbide tipped?
These are solid carbide micro drills, not carbide-tipped drills.

Can I use these for PCB drilling?
Yes. These micro carbide drills are suitable for PCB-related drilling when used in a stable drill press, CNC machine, micro drill fixture, or other controlled setup.

Can I use these by hand?
They can be used carefully in a pin vise or other controlled holder, but carbide drills are brittle. Keep the drill straight, use light pressure, and avoid side loading.

Can these also be used for carburetor jets or small orifices?
Yes, this size range can be useful for careful small-orifice work, including carburetor jet applications. For carburetor-focused information and related sets, see the carburetor jet drill set collection linked below.

👉 View Carbide Drill Bit Feed & Speed Starting Guide