Best Reduced Shank Drill Bits Under $100 (2026)
We ranked reduced shank drill bits under $100 by a value score combining material (cobalt vs HSS/M2), shank size compatibility, user rating, and price
This roundup covers reduced shank drill bits priced under $100, focused on value and material suitability for heavy-duty drilling. Picks were chosen by scoring durability, shank compatibility, and value from user ratings and product specs such as HSS/M2 and cobalt construction
Top Picks
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1
COMOWARE Reduced Shank Drill Bit Set, 8 Sizes 9/16" to 1"
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
Drill America 57/64in Reduced Shank Cobalt Drill Bit
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
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
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
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
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