Best Reduced Shank Drill Bits Under $100 (2026)
We selected items under $100 and scored them by material (cobalt vs HSS), shank compatibility, size range, and overall value for metalworking tasks
The Verdict
- Best Overall: COMOWARE Reduced Shank Drill Bit Set, 8 Sizes 9/16" to 1" — Best for set versatility: an eight-size reduced shank HSS set that covers 9/16" to 1" for varied metal projects
- Best Value: Drill America 57/64in Reduced Shank Cobalt Drill Bit — Best for single-size toughness: a reduced shank cobalt bit built for cutting hard steels with sustained heat resistance
This roundup covers reduced shank drill bits suitable for drilling metals and hardened materials, all priced under $100 and chosen for value. Picks were ranked by a value score that weights material (HSS vs cobalt), shank size compatibility, and buyer-relevant features like set versatility and drill compatibility
Top Picks
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1
Best Overall COMOWARE Reduced Shank Drill Bit Set, 8 Sizes 9/16" to 1"
Best for set versatility: an eight-size reduced shank HSS set that covers 9/16" to 1" for varied metal projects
Reduced shank HSS drill bit set with dual gold/black coatings for durability and smoother drilling. Customers note good edge retention in mild steel and clear size labeling
- M2 high-speed steel with dual coatings
- 135° split point for precision
- 3-flat 1/2" shank for stability
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2
Best Value Drill America 57/64in Reduced Shank Cobalt Drill Bit
Best for single-size toughness: a reduced shank cobalt bit built for cutting hard steels with sustained heat resistance
Cobalt drill bit with 1/2in shank for harder metals. Improves performance with cobalt content and gold oxide surface. Some customers report variability in dullness and durability
- cobalt enhanced performance for hard metals
- versatile round shank for diverse toolholders
- aerospace standard 907 compliance
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3
Drill America 29/32" cobalt drill bit, 1/2" shank
Best for midrange diameters: a 29/32" reduced shank cobalt bit offering rigid performance for stainless and alloy drilling
Cobalt steel drill bit with round shank for versatile toolholding. Designed for harder metals with cobalt content; gold oxide surface indicates coating type. Customer insight notes mixed results on sharpness and durability
- cobalt for hard metals
- round shank compatibility
- aerospace standard 907
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4
Drill America 51/64in Reduced Shank Cobalt Drill Bit, DWDCO Series
Best for DWDCO-series consistency: a 51/64" cobalt reduced shank bit suited to repeated metal-drilling tasks
Cobalt drill bit with 51/64" reduced shank and 1/2" shank compatibility. Cobalt steel for harder metals; round shank supports diverse toolholding systems. Customer insight notes mixed durability and sharpness performance
- cobalt alloy for hard metals
- reduced shank with versatile fit
- aerospace standard 907 compliant
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5
Drill America 15/16 in Reduced Shank Cobalt Drill Bit
Best for large-diameter metal holes: a 15/16" reduced shank cobalt bit designed to handle thicker stainless and steel workpieces
Cobalt drill bit with 1/2 in round shank for use in various toolholding systems. Designed for drilling harder metals; features a gold oxide surface and counterclockwise chip evacuation. One customer note highlights varied sharpness and durability
- cobalt for harder metals
- round shank for versatile holders
- aerospace-standard 907
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6
Drill America cobalt reduced shank drill bit 63/64" DWDCO
Best for near-inch sizes: a 63/64" cobalt reduced shank bit offering durability for tough metal drilling applications
Cobalt steel drill bit with 63/64" reduced shank and 1/2" shank option. Designed for harder metals; round shank compatible with various toolholding systems. Customer note: mixed feedback on durability and sharpness
- cobalt for hard metals
- reduced shank with versatile grip
- aerospace standard 907
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7
DWDCO cobalt reduced-shank drill bit, 1/2 in shank
Best for 1/2" shank compatibility: a heavy-duty DWDCO cobalt reduced shank option made for demanding metalwork
Cobalt drill bit with 1/2" round shank for versatile tooling. Improves performance when cutting harder metals; round shank supports varied toolholding. Some users report brittleness and wobble in use
- cobalt for high-temp durability
- round shank compatibility
- aerospace-standard manufacture