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 47
- Approved Vendor 1/8" X 12" HSS Aircraft Extension Drill Bit, D/AA/C SKU 17601 $7.77
- Drill America 1/8" X 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 17602 $5.88
- Milwaukee 1/8" X 2" x 3-1/2" Carbide Hammer Drill Bit SKU 495-48-20-9000 $5.58
- Approved Vendor 1/8" x 3" Carbide Tipped Masonry Drill Bit SKU 17612 $1.25
- Approved Vendor 1/8" x 6" HSS Aircraft Extension Drill Bit, D/AA/C SKU 17638 $3.17
- Drill America 1/8" x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 17639 $2.05
- DeWalt 1/8in Drywall Pilot Point Cut Out Bit 10 SKU 115-DWAPP18010 $18.00
- DeWalt 1/8in Drywall Pilot Point Cut Out Bit 20 SKU 115-DWAPP18020 $34.70
- Alfa Tool 10" Bushing Shank SDS-Max Chisel SKU DC63157A $106.96
- Approved Vendor 10.00mm Cobalt Jobber Length Drill Bit, D/ACO Series SKU 17760 $16.89
- Approved Vendor 10.00mm HSS 1MT Metric Taper Shank Drill Bit SKU 17761 $14.08
- Drill America 10.00mm HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 17766 $9.51
- Approved Vendor 10.00mm HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 17767 $15.03
- Approved Vendor 10.00mm HSS Jobber Length Drill Bit SKU 17768 $4.81
- Approved Vendor 10.20mm HSS Jobber Length Drill Bit SKU 17770 $4.81
- Approved Vendor 10.25mm HSS Jobber Length Drill Bit SKU 17771 $5.55
- Approved Vendor 10.50mm Cobalt Jobber Length Drill Bit, D/ACO Series SKU 17772 $18.68
- Approved Vendor 10.50mm HSS 1MT Metric Taper Shank Drill Bit SKU 17773 $15.02
- Drill America 10.50mm HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 17774 $9.77
- Approved Vendor 10.50mm HSS Jobber Length Drill Bit SKU 17775 $5.55
- Approved Vendor 10.70mm HSS Jobber Length Drill Bit SKU 17776 $6.63
- Approved Vendor 10.75mm HSS Jobber Length Drill Bit SKU 17777 $6.63
- Approved Vendor 10.80mm HSS Jobber Length Drill Bit SKU 17778 $6.63
- Irwin 11" Long Reach Long Nosepliers SKU 585-1773584 $31.13
- Approved Vendor 11.00mm Cobalt Jobber Length Drill Bit, D/ACO Series SKU 17827 $19.12
- Approved Vendor 11.00mm HSS 1MT Metric Taper Shank Drill Bit SKU 17828 $15.23
- Alfa Tool 11.00mm HSS Alfa Usa Metric Jobber Drill SKU MJ152037 $10.36
- Drill America 11.00mm HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 17831 $11.28
- Approved Vendor 11.00mm HSS Jobber Length Drill Bit SKU 17832 $5.91
- Approved Vendor 11.50mm Cobalt Jobber Length Drill Bit, D/ACO Series SKU 17836 $22.90
- Approved Vendor 11.50mm HSS 1MT Metric Taper Shank Drill Bit SKU 17837 $16.72
- Alfa Tool 11.50mm HSS Alfa Usa Metric Jobber Drill SKU MJ152038 $11.44
- Drill America 11.50mm HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 17838 $13.18
- Approved Vendor 11.50mm HSS Jobber Length Drill Bit SKU 17839 $6.60
- Alfa Tool 11/16 Cobalt S&D Drill 1/2" Shank SKU SDCO50411 $68.80
- Alfa Tool 11/16 Cobalt S&D Drill 1/2" Shank Carded SKU SDCO50411C $71.70
- Approved Vendor 11/16" 2MT Cobalt Taper Shank Drill Bit SKU 17847 $147.82
- Approved Vendor 11/16" Carbide Tipped 2MT Taper Shank Drill Bit SKU 17852 $250.88
- Approved Vendor 11/16" Carbide Tipped Die Drill Bit SKU 17853 $193.21
- Approved Vendor 11/16" Carbide Tipped Taper Length Drill Bit SKU 17856 $220.52
- Approved Vendor 11/16" Cobalt Drill Bit with 1/2" Reduced Shank, D/ACO SKU 17857 $48.92
- Drill America 11/16" Cobalt Drill Bit with 1/2" Reduced Shank, DWDCO SKU 17858 $32.19
- Approved Vendor 11/16" Cobalt Drill Bit with 3/8" Reduced Shank, D/ACO SKU 17859 $68.49
- Approved Vendor 11/16" Cobalt HSS Reduced Shank 135° Drill Bit, 1/2" Shank SKU 112 $98.20
- Approved Vendor 11/16" Cobalt Split Point Stub Drill Bit SKU 17860 $67.98
- Approved Vendor 11/16" Cobalt Taper Length Drill Bit SKU 17861 $109.94
- Approved Vendor 11/16" HSS 2MT Taper Shank Drill Bit SKU 17864 $26.05
- Approved Vendor 11/16" HSS Black & Gold Drill Bit with Reduced 1/2" 3-Flat Shank, Contractor Series SKU 17867 $16.79