20 Pc Carbide Carburetor Jet Drill Set – 0.35–1.80 mm – CDS-102

20 Pc Carburetor Jet Drill Set – Selected Sizes .35mm to 1.80mm

This 20-piece factory resharpened solid carbide micro drill set provides a carefully selected range of small drill sizes for carburetor jet checking, matching, cleaning, and controlled resizing work.

A practical choice for many carburetor and fuel-metering applications when the required jet orifice diameter matches one of the included sizes.

The assortment is concentrated more closely at the smaller sizes, then progresses through useful larger sizes up to 1.80 mm (.0709"). This provides broader practical coverage than a simple evenly spaced assortment while keeping the set compact and affordable.

Included Sizes – 20 Pieces Total

Includes one drill each of the following selected sizes:

• 0.35 mm — approx. .0138"
• 0.40 mm — approx. .0157"
• 0.45 mm — approx. .0177"
• 0.50 mm — approx. .0197"
• 0.55 mm — approx. .0217"
• 0.60 mm — approx. .0236"
• 0.65 mm — approx. .0256"
• 0.70 mm — approx. .0276"
• 0.75 mm — approx. .0295"
• 0.80 mm — approx. .0315"
• 0.90 mm — approx. .0354"
• 1.00 mm — approx. .0394"
• 1.10 mm — approx. .0433"
• 1.20 mm — approx. .0472"
• 1.30 mm — approx. .0512"
• 1.40 mm — approx. .0551"
• 1.50 mm — approx. .0591"
• 1/16" — .0625" / 1.5875 mm
• 1.70 mm — approx. .0669"
• 1.80 mm — approx. .0709"

Specifications

• 20 drills total — one of each listed size
• Factory resharpened solid carbide
• Standard 1/8" (3.175 mm) shank
• Approximately 1.50" overall length
• Indexed plastic storage case included

Common Uses

• Careful brass carburetor jet resizing
• Checking and matching jet orifice sizes
• Main and pilot jet work where actual bore diameter is known
• Small-engine carburetors
• Motorcycle, scooter, ATV, kart, go-kart, and RC carburetor work
• Other small fuel-metering openings and precision drilling applications

Factory Resharpened Solid Carbide

These are professional-grade solid carbide micro drills that have been factory resharpened, providing a cost-effective alternative to new carbide drills.

The full 1/8" shanks provide substantially greater rigidity than lightweight wire-style hobby drill assortments.

These are not new drills. They are factory resharpened tools that have been prepared for continued precision use.

Important Use Information

Solid carbide is extremely hard and wear resistant, but it is also brittle. Use a pin vise, drill press, milling machine, micro-drill fixture, or other controlled holder that keeps the drill straight.

Avoid side pressure, bending, or forcing the drill. These tools are intended for careful precision work rather than flexible hand drilling.

Important Carburetor Jet Note

Carburetor jet numbers do not always correspond directly to the physical bore diameter, and numbering systems can vary by manufacturer and jet series.

Verify the actual diameter required before drilling.

Drilling a jet is a permanent modification. Increase the opening gradually. Fuel flow can also be affected by the shape, length, entry, exit, and finish of the metering passage, not only its diameter.

Frequently Asked Questions

Are these new drills?
No. They are factory resharpened solid carbide drills.

Is this an incremental or continuous numbered-drill set?
No. This set contains 20 deliberately selected sizes covering approximately .0138" through .0709".

Why is 1/16" included instead of 1.60 mm?
The set includes an actual 1/16" (.0625" / 1.5875 mm) drill at this position rather than representing it as an exact 1.60 mm drill.

Can these be used by hand?
Yes, carefully in a pin vise or other controlled holder. Because solid carbide is brittle, keep the drill straight and avoid side loading.

Will this set work with every carburetor?
Not necessarily. Carburetor jet systems vary. Use the included size list to confirm that the drill diameter you need is included before purchasing.