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Both thread systems, and the count adds up

NEIKO 10059A, 13-piece drill-tap set

The only combination set on this shelf that covers both thread systems and whose stated piece count matches its own contents.

NEIKO 13-piece combination drill and tap set in its case

NEIKO 10059A, 13-piece drill-tap set

The only combination set on this shelf that covers both thread systems and whose stated piece count matches its own contents.

Amazon reference
B0762HJ3GF
EAN
0816914021129
  • Covers both systems — six SAE sizes and six metric — in one case
  • The arithmetic is right: six plus six plus one adapter is thirteen
  • No coating or surface treatment stated, where the sets at half the price claim titanium or nitriding

Best for: A workshop that meets both imperial and metric threads and does not want two sets

≈ $30
Check price on Amazon

Specifications

Amazon reference
B0762HJ3GF
EAN
0816914021129

Of the five combination drill-tap sets on this shelf, this is the one whose contents are what the title says: thirteen pieces, being six SAE sizes from 6-32 to 1/4-20, six metric from M3 to M10, and a quick-change adapter. On a shelf where another set describes twelve sizes in a six-piece box, that is worth stating first.

Covering both thread systems is the real argument. A workshop does not choose what arrives on a bracket or a gearbox, and a set with only imperial sizes will meet an M6 hole eventually. Having both in one case, with an adapter that stays in the chuck so the bits snap in and out, is the practical version of this tool rather than the cheap one.

The construction is stated plainly as high speed steel, with a 1/4 in hex shank and a tapered end to prevent over-tapping. What is missing, compared with the sets at half the price, is any surface treatment: no titanium coating, no nitriding. And the materials named are sheet metal, plastic and copper — mild steel is not among them, which on a site about metalworking is the limit to read carefully.

Availability

Read on the day this page was built: $30 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-07. The live price is at the top of the page.

The questions welders ask

Why does covering both systems matter?

Because a workshop does not get to choose. Machinery, fasteners and brackets arrive with whatever thread the maker used, and a set with only SAE sizes meets an M6 bolt sooner or later. Having 6-32 through 1/4-20 and M3 through M10 in one case removes the second purchase. On this shelf, one set claims both and lists twelve sizes under a title of six; this one claims thirteen pieces and delivers six, six and an adapter.

What does the quick-change adapter add?

Speed, and one less thing to lose. All these bits have a 1/4 in hex shank, so they can go straight into a drill chuck — but then changing size means opening and closing the chuck each time. A quick-change adapter stays in the chuck and the bits snap in and out of it, which on a job needing three sizes in a row is the difference between a minute and five. Two sets on this shelf include one.

More drill bits & taps

  • QWORK titanium-coated combination drill and tap bits in their case

    QWORK DG39142, 1/4-20 drill-tap, 6-pack

    Six combination drill-tap bits in a single thread size — which is not what "6 pcs" means on the two sets beside it on this shelf.

    Amazon reference
    B0GKC9KXWC
    EAN
    0795973764096
    • Six bits of one size, so a snapped bit is replaced immediately rather than ordered
    • Titanium coating on HSS, stated for thermal stability
    • All six bits are 1/4"-20 — this is not a size set, and the title does not make that obvious

    Best for: One thread size used constantly, where the bit that snaps is replaced from the same box

    ≈ $7
    Check price on Amazon
  • Greenlee DTAPKIT one-step drill and tap kit with its quick change adaptor

    TEMPO Greenlee DTAPKIT

    A trade kit that publishes the one limit these bits actually have — the thickness of metal it will tap through, up to 10 gauge.

    Amazon reference
    B0041FIR1E
    EAN
    0013161051743
    • Publishes a material thickness limit — up to 10-gauge metal — which only one other listing here does
    • Names the materials properly: aluminum, brass, copper, plastic and mild steel
    • Ten gauge is about 3.4 mm (0.13 in) — thicker section needs a tap and a tapping drill, not a combination bit

    Best for: Electrical and plumbing work on enclosures, strut and panel up to 10 gauge

    ≈ $31
    Check price on Amazon
  • Baer Thread cutting set M3–M12, HSS-G, product photograph

    Baer Thread cutting set M3–M12, HSS-G

    Taps and dies from M3 to M12, in ground HSS — the sizes that cover almost every workshop repair.

    Range
    M3 to M12
    Material
    HSS-G (ground high-speed steel)
    Covers
    Internal threads (taps) and external threads (dies)
    Amazon reference
    B09Z25RGQH
    EAN
    4058462189814
    • HSS-G means ground rather than rolled flutes: sharper and more accurate
    • M3–M12 covers the vast majority of workshop fasteners
    • Not sold on the American store at the time of checking

    Best for: Repairing stripped threads and making threaded holes properly

    Search Amazon for this model

Elsewhere in the workroom

  • Hyundai Welding MB25 set, 0.8 / 1.0 / 1.2 mm, product photograph

    Hyundai Welding MB25 set, 0.8 / 1.0 / 1.2 mm

    Three tip sizes in one box — the set to buy when you do not yet know which wire you will settle on.

    Torch
    MB25 / type 250
    Thread
    M6
    Tip sizes
    0.8, 1.0 and 1.2 mm (0.05 in)
    Contents
    Contact tips, gas nozzle, tip holder
    Amazon reference
    B0C3H3GQG1
    EAN
    0725844867205
    • Covers every wire diameter a 200 A machine is likely to run
    • One order instead of three when you change wire
    • You will use one size far more than the other two

    Best for: A new MIG owner who has not yet settled on a wire diameter

    Check price on Amazon
  • IPOTOOLS Argon/CO₂ regulator, product photograph

    IPOTOOLS Argon/CO₂ regulator

    The cheapest way to get gas from a bottle to a torch, from an importer with an address.

    Gases
    Argon and CO₂
    Use
    MIG/MAG and TIG shielding gas
    Amazon reference
    B00KPQ51IA
    EAN
    0683405444107
    • €33 for the part that stands between a 200 bar bottle and your torch
    • IPOTOOLS publishes a company address, unlike most sellers in this category
    • No flow range or gauge specification published

    Best for: A first bottle setup on a MIG or TIG machine

    Check price on Amazon
  • Kemper Smart Master with 3 m arm, product photograph

    Kemper Smart Master with 3 m arm

    The professional answer, at professional money — a 3 m (10 ft) arm and a maker that does nothing else.

    Format
    Mobile extraction unit
    Arm
    3 m (10 ft) reach
    Manufacturer
    Kemper — welding fume extraction specialist
    Amazon reference
    B07QS2SQKY
    EAN
    0758198392741
    • A 3 m (10 ft) arm reaches the whole of a normal welding bay from one position
    • Kemper builds extraction and nothing else
    • €2,025 — more than every welding machine on this site combined at the entry end

    Best for: A business welding daily, where exposure is an occupational health obligation

    Search Amazon for this model

All drill bits & taps