Drill Bits
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Expected delivery: Wed, Nov 18
This section covers twist drill bits for metal, wood and plastic, along with step drills, masonry bits and drill bit sets. Lengths include stub (screw machine), jobber, taper and extra-long. Materials range from general-purpose high-speed steel (HSS) to cobalt for stainless and tough alloys and solid carbide for production machining. Sizes come in fractional, letter, number (wire gauge) and metric series, with black oxide, bright, gold oxide and titanium nitride finishes.
What to check before you order
- Workpiece material. HSS suits mild steel, aluminum and wood. Cobalt holds up in stainless. Carbide-tipped masonry bits are for concrete and block in a hammer drill.
- Point style. A 135 degree split point self-centers and cuts harder metals. A 118 degree point is common for general work.
- Length. Stub length bits are stiffer and wander less. Use jobber length for general work and taper or extra-long only when you need reach.
- Shank. Check the chuck. Reduced shank bits fit a 1/2" chuck on larger sizes, and SDS shanks fit rotary hammers.
- Tap drill sizes. Number and letter sizes exist mainly to drill tap holes. Keep a chart near the drill press.
Common questions
What is a jobber length drill bit?
It is the standard general-purpose length, long enough for most hand drill and drill press work while still fairly rigid.
Learn more in our drill bit materials guide, browse Alfa Tool bits, or see taps and dies and all cutting tools.
Drill Bits: page 50
- Approved Vendor 11/64" HSS Taper Length Drill Bit SKU 18081 $6.21
- Approved Vendor 11/64" Solid Carbide Drill Bit SKU 18082 $26.69
- Approved Vendor 11/64" Tin Coated Jobber Length Drill Bit SKU 18084 $3.21
- Approved Vendor 11/64" X 12" HSS Aircraft Extension Drill Bit, D/AA/C SKU 18086 $9.52
- Drill America 11/64" X 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 18087 $7.18
- Approved Vendor 11/64" x 6" HSS Aircraft Extension Drill Bit, D/AA/C SKU 18097 $4.74
- Drill America 11/64" x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 18098 $2.96
- Alfa Tool 115PC Alfa Usa Master Split Point Set SKU S150199 $426.76/pack of 115
- Milwaukee 12 In. Diamond Premium Wet Core Bit SKU 495-48-17-3120 $1,956.33
- Milwaukee 12" SDS Max Core Bit Ada SKU 495-48-03-3572 $129.84
- Milwaukee 12-24 NC Straight Fluteplug Tap & #16 Drill Bit SKU 495-49-57-5530 $16.00
- Approved Vendor 12.00mm HSS 2MT Metric Taper Shank Drill Bit SKU 18187 $18.95
- Alfa Tool 12.00mm HSS Alfa Usa Metric Jobber Drill SKU MJ152039 $13.26
- Drill America 12.00mm HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 18190 $14.23
- Approved Vendor 12.00mm HSS Jobber Length Drill Bit SKU 18191 $7.37
- Approved Vendor 12.50mm Cobalt Jobber Length Drill Bit, D/ACO Series SKU 18193 $24.52
- Approved Vendor 12.50mm HSS 2MT Metric Taper Shank Drill Bit SKU 18194 $18.95
- Alfa Tool 12.50mm HSS Alfa Usa Metric Jobber Drill SKU MJ152040 $13.94
- Drill America 12.50mm HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 18195 $14.23
- Approved Vendor 12.50mm HSS Jobber Length Drill Bit SKU 18196 $7.63
- Approved Vendor 12.50mm Reduced Shank HSS Drill Bit 1/2" Shank, DWDRSD Series SKU 18197 $16.02
- Approved Vendor 12.80mm HSS Jobber Length Drill Bit SKU 18198 $8.73
- DeWalt 12V Xtreme Multi-Head Drill/Drive SKU 115-DCD703F1 $286.93
- Approved Vendor 13.00mm Cobalt Jobber Length Drill Bit, D/ACO Series SKU 18216 $32.07
- Approved Vendor 13.00mm HSS 2MT Metric Taper Shank Drill Bit SKU 18217 $21.20
- Alfa Tool 13.00mm HSS Alfa Usa Metric Jobber Drill SKU MJ152041 $23.20
- Drill America 13.00mm HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 18218 $17.62
- Approved Vendor 13.00mm HSS Jobber Length Drill Bit SKU 18219 $8.73
- Approved Vendor 13.00mm Reduced Shank HSS Drill Bit 1/2" Shank, DWDRSD Series SKU 18221 $16.02
- Approved Vendor 13.50mm HSS 2MT Metric Taper Shank Drill Bit SKU 18225 $23.13
- Approved Vendor 13.50mm HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 18226 $33.99
- Approved Vendor 13.50mm HSS Jobber Length Drill Bit SKU 18227 $10.96
- Approved Vendor 13.50mm Reduced Shank Cobalt Drill Bit 1/2" Shank SKU 18228 $61.33
- Approved Vendor 13.50mm Reduced Shank HSS Drill Bit 1/2" Shank, DWDRSD Series SKU 18229 $18.00
- Alfa Tool 13/16 Cobalt S&D Drill 1/2" Shank SKU SDCO50417 $90.16
- Alfa Tool 13/16 Cobalt S&D Drill 1/2" Shank Carded SKU SDCO50417C $93.06
- Alfa Tool 13/16 HSS Taper Length Drill SKU TL50349 $65.52
- Approved Vendor 13/16" 2MT HSS Undersized Shank Taper Shank Drill Bit SKU 18236 $47.40
- Approved Vendor 13/16" 3MT Cobalt Taper Shank Drill Bit SKU 18237 $186.10
- Approved Vendor 13/16" Carbide Tipped 3MT Taper Shank Drill Bit SKU 18242 $287.81
- Approved Vendor 13/16" Carbide Tipped Taper Length Drill Bit SKU 18245 $250.52
- Approved Vendor 13/16" Cobalt Drill Bit with 1/2" Reduced Shank, D/ACO SKU 18246 $61.13
- Drill America 13/16" Cobalt Drill Bit with 1/2" Reduced Shank, DWDCO SKU 18247 $41.33
- Approved Vendor 13/16" Cobalt HSS Reduced Shank 135° Drill Bit, 1/2" Shank SKU 128 $125.85
- Approved Vendor 13/16" Cobalt Split Point Stub Drill Bit SKU 18248 $101.53
- Approved Vendor 13/16" Cobalt Taper Length Drill Bit SKU 18249 $161.17
- Approved Vendor 13/16" HSS 3MT Taper Shank Drill Bit SKU 18254 $38.26
- Approved Vendor 13/16" HSS Black & Gold Drill Bit with Reduced 1/2" 3-Flat Shank, Contractor Series SKU 18256 $20.47