Drill Bits
5,000+ products
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 42
- Approved Vendor 1/16" X 12" HSS Aircraft Extension Drill Bit, D/AA/C SKU 13824 $7.24
- Drill America 1/16" X 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 13825 $5.47
- Approved Vendor 1/16" x 6" HSS Aircraft Extension Drill Bit, D/AA/C SKU 13831 $4.42
- Drill America 1/16" x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 13832 $2.75
- Alfa Tool 1/2 1/4 Hex Shank Drill Split Point SKU HSD51099 $10.56
- Alfa Tool 1/2 Cobalt Left Hand Jobber Drill SKU JDLCO93129 $43.18
- Alfa Tool 1/2 Cobalt Screw Machine Drill SKU SMCO50229 $18.70
- Alfa Tool 1/2 HS Alfa Usa Jobber Drill Split Point Tin SKU S150129TN $20.60
- Alfa Tool 1/2 HSS 135° Split Point Tin Coated Tipped Jobber Drill SKU S40129TT $13.50
- Alfa Tool 1/2 HSS Alfa Usa 3/8 Shank Drill SKU RS151865 $13.86
- Alfa Tool 1/2 HSS Alfa Usa Jobber Drill Bright SKU J150129B $11.60
- Alfa Tool 1/2 HSS Blitz Bit Jobber Length Drill SKU BB74129 $13.04
- Alfa Tool 1/2 HSS Screw Machine Blitz Drill SKU BBSM50229 $12.50
- Alfa Tool 1/2 X 12 SDS Plus Quadro Hammer Drill 10PC SKU SDSQ734 $229.42/pack of 10
- Alfa Tool 1/2 X 12-1/4 SDS Plus Quadro Hammer Drill SKU SDSQ72422 $24.14
- Alfa Tool 1/2 X 18 HSS Extra Long Drill SKU LB60925 $91.68
- Alfa Tool 1/2 X 18 SDS Plus Quadro Hammer Drill SKU SDSQ72423 $31.84
- Alfa Tool 1/2 X 3-3/4 Overall Carbide Straight Flute Drill SKU SCSF30129 $118.04
- Alfa Tool 1/2 X 6 SDS Plus Quadro Hammer Drill 10PC SKU SDSQ733 $156.60/pack of 10
- Alfa Tool 1/2" 150° Carbide 3 Flute Drill SKU SCTF30829 $127.90
- Approved Vendor 1/2" 1MT HSS Undersized Shank Taper Shank Drill Bit SKU 14434 $20.82
- Approved Vendor 1/2" 2MT Cobalt Taper Shank Drill Bit SKU 14435 $89.59
- DeWalt 1/2" 600RPM 7.8AMP H.D.Drill w/Keyless C SKU 115-DW246 $251.89
- DeWalt 1/2" Brad Point SKU 115-DW1714 $13.91
- Approved Vendor 1/2" Brad Point Drill Bit SKU 14443 $3.81
- Approved Vendor 1/2" Carbide Spade Drill Bit SKU 14470 $90.10
- Approved Vendor 1/2" Carbide Tipped 2MT Taper Shank Drill Bit SKU 14471 $193.18
- Approved Vendor 1/2" Carbide Tipped 4 Flute Glass & Tile Drill Bit SKU 14472 $20.28
- Approved Vendor 1/2" Carbide Tipped 4 Flute Glass & Tile Drill Bit with Hex Shank SKU 14473 $22.30
- Approved Vendor 1/2" Carbide Tipped Die Drill Bit SKU 14474 $135.42
- Approved Vendor 1/2" Carbide Tipped Glass & Tile Drill Bit SKU 14475 $20.28
- Approved Vendor 1/2" Carbide Tipped Glass & Tile Drill Bit with Hex Shank SKU 14476 $22.30
- Approved Vendor 1/2" Carbide Tipped Jobber Length Drill Bit SKU 14477 $87.43
- Approved Vendor 1/2" Carbide Tipped Taper Length Drill Bit SKU 14478 $131.48
- Approved Vendor 1/2" Cobalt Drill Bit with 3/8" Reduced Shank, D/ACO SKU 14482 $23.81
- Approved Vendor 1/2" Cobalt Jobber Length Drill Bit, D/ACO Series SKU 14483 $18.80
- Drill America 1/2" Cobalt Jobber Length Drill Bit, DWDCO Series SKU 14484 $14.29
- Approved Vendor 1/2" Cobalt Split Point Stub Drill Bit SKU 14488 $15.55
- Approved Vendor 1/2" Cobalt Taper Length Drill Bit SKU 14489 $52.60
- Approved Vendor 1/2" Cryogenic HSS Black & Gold Jobber Length Drill Bit SKU 14490 $41.69
- Approved Vendor 1/2" Forstner Drill Bit SKU 14493 $7.52
- Approved Vendor 1/2" HSS 2MT Taper Shank Drill Bit SKU 14501 $16.37
- Approved Vendor 1/2" HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 14503 $28.88
- Drill America 1/2" HSS Black & Gold Drill Bit with Reduced 3/8" 3-Flat Shank, KFD SKU 14504 $11.26
- Drill America 1/2" HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 14505 $9.27
- Drill America 1/2" HSS Black & Gold KFD Split Point Mechanics Length Drill Bit with 3-Flat Shank SKU 14506 $9.49
- Approved Vendor 1/2" HSS Black & Gold Split Point Drill Bit with 3-Flat Shank, Contractor Series SKU 14507 $7.41
- Approved Vendor 1/2" HSS Black & Gold Split Point Stub Drill Bit, Contractor Series SKU 14508 $7.57