Shop All Savings
Appliances
Bath & Faucets
Blinds & Window Treatment
Building Materials
Lumber & Composites
Cleaning
Decor & Furniture
Lighting & Ceiling Fans
Doors & Windows
Electrical
Flooring & Area Rugs
Hardware
Heating & Cooling
Kitchen & Kitchenware
Lawn & Garden
Outdoor Living & Patio
Paint
Plumbing
Seasonal Decor
Smart Home
Storage & Organization
Tools
Automotive
Furniture
Gift Cards
Credit Cards
View All Home Services
Tool Rental
Benefits & Services For the Pro
Project Calculators
View All DIY Projects
Local Ad
Store Finder
Site Map
#1 Home Improvement Retailer
Select store
...
...
Cart
Select store
...
...
Shop All
Services
DIY
Log In
Cart
...
Home
/
Tools
/
Power Tool Accessories
/
Drill Bits
/
Twist Drill Bits
COBALT TWIST DRILL BITS
Get It Fast
In Stock at Store Today
Free 1-2 Day Delivery
Next-Day Delivery
Filters
Filters
Clear All
Bit Material: Cobalt
Tools Product Type: Power Tool
Get It Fast
In Stock at Store Today
Free 1-2 Day Delivery
Next-Day Delivery
Availability
Show Out of Stock
Department
Tools
Power Tool Accessories
Drill Bits
Twist Drill Bits
Review Rating
5
4 & Up
3 & Up
2 & Up
1 & Up
Brand
Drill America
Milwaukee
Gyros
CLE-LINE
Bosch
STARK USA
Price
to
Apply
$0 - $10
$10 - $20
$20 - $30
$30 - $40
$40 - $50
$50 - $100
$100 - $150
$150 - $200
$200 - $250
$250 - $300
$500 - $600
Special Values
Bit Diameter
1/8 in
1/4 in
5/16 in
5/32 in
9/64 in
11/64 in
13/32 in
19/64 in
25/64 in
H
#14
#18
#23
#25
#31
#37
#38
#46
#47
#52
1/2 in
3/16 in
3/8 in
5/64 in
7/32 in
7/64 in
7/8 in
9/32 in
11/16 in
13/64 in
15/64 in
17/32 in
21/64 in
35/64 in
43/64 in
61/64 in
J
Q
#11
#13
#15
#16
#19
#20
#21
#24
#26
#27
#33
#36
#39
#3
#40
#44
#45
#48
#4
#50
#53
#55
#56
#57
#62
#69
#71
#72
#78
#8
#9
1-1/2 in
1-5/16 in
1/16 in
1.5 mm
3/32 in
3/4 in
3.5 mm
5/8 in
9/16 in
12 mm
15/32 in
17/64 in
19/32 in
21/32 in
23/64 in
29/32 in
37/64 in
47/64 in
53/64 in
57/64 in
D
G
L
M
N
O
U
X
Material Application
Stainless Steel
Steel
Aluminum
Duct/Sheet Metal
Cast Iron
Wood
Angle Iron
Copper
PVC
Nickel
Plaster
Vinyl Flooring
Linoleum
Ceramic Tile
Gypsum
Porcelain
Number of Pieces
1 Piece
5-10 Pieces
11-20 Pieces
21-30 Pieces
41-60 Pieces
101+ Pieces
Bit Material
High Speed Steel
Cobalt
Titanium
Carbide
Black Oxide
Multiple
Other
Steel
Carbon
Titanium Nitride Coated
Alloy Steel
Carbon Steel
Cobalt and Carbon Steel
Features
No Additional Features
Bit Length (in.)
0.87 in
1.12 in
1.25 in
1.37 in
1.5 in
1.62 in
1.68 in
1.75 in
1.81 in
1.87 in
1.89 in
2 in
2.06 in
2.12 in
2.25 in
2.43 in
2.5 in
2.62 in
2.68 in
2.75 in
2.81 in
2.87 in
2.93 in
3 in
3.12 in
3.25 in
3.37 in
3.5 in
3.75 in
3.88 in
4 in
4.12 in
4.37 in
4.5 in
4.50 in
4.75 in
5 in
5.12 in
5.25 in
5.62 in
5.87 in
6 in
6.25 in
6.37 in
6.5 in
6.62 in
6.75 in
7 in
7.12 in
7.5 in
7.62 in
7.75 in
8 in
9 in
10 in
11.37 in
12 in
Shank Diameter
1/2 in
3/8 in
5/16 in
11/64 in
19/64 in
25/64 in
H
#14
#18
#23
#25
#31
#37
#38
#46
#47
#52
1/4 in
1/8 in
3/16 in
3/8 in.
5/32 in
5/64 in
7/32 in
7/64 in
9/32 in
9/64 in
13/32 in
13/64 in
15/64 in
21/64 in
43/64 in
J
Q
#11
#13
#15
#16
#19
#20
#21
#24
#26
#27
#33
#36
#39
#3
#40
#44
#45
#48
#4
#50
#53
#55
#56
#57
#62
#69
#71
#72
#78
#8
#9
1/16 in
1.5 mm
3/32 in
3.5 mm
7/8 in
11/16 in
12 mm
15/32 in
17/32 in
17/64 in
19/32 in
21/32 in
23/64 in
35/64 in
37/64 in
D
G
L
M
N
O
U
X
Shank Style
Straight
Hex
3-Flat
Round
Drilling Depth (in)
0.125
0.1875
0.3125
0.375
0.5
0.5625
0.625
0.6875
0.75
0.8125
0.86614173
0.875
1
1.0625
1.125
1.1875
1.25
1.3125
1.375
1.4375
1.5
1.5625
1.625
1.6875
1.73228346
1.75
1.81
1.8125
1.875
2
2.125
2.1875
2.25
2.3125
2.375
2.5
2.5625
2.75
2.8125
2.875
2.9375
3
3.0625
3.4375
3.75
3.875
4
4.125
4.25
4.37007874
4.375
4.75
4.8125
5.1875
5.375
5.625
Individual/Set
Individual
Set
Featured Keywords
black oxide
high speed steel
gold oxide
split point
jobber length
extra length
drill chuck
black oxide drill bit
hard metal
1/2 in. shank
cobalt steel
cobalt alloy
length drill bit
variable helix
longer life
round shank
2 high speed steel
135 degree split point
bits core
cobalt steel tool
heavy-duty jobber length drill bit
precision start
fast drilling
nickel alloy
overall length
3 flat shank
42 cobalt drill bits
cast iron
center punch
cobalt drill bits
cobalt drills
cobalt twist
decimal equivalent
jobber length cobalt
long life
m42 alloy
quadedge tip
standard length
stub length
taper length drill
1/2. drill
5 drill bits
5/32 in. drill bit
5/64 in. cobalt red helix drill bit
6 in. cobalt aircraft extension drill bit
8 piece set
42 cobalt drills
118 degree
135 split point
cobalt aircraft extension
drilling metal
large diameter holes
letter size
premium industrial grade
right-hand cut
standard bit
thru z
View Results
All Filters
Bit Diameter
Material Application
Number of Pieces
Bit Material
Features
Bit Material: Cobalt
Tools Product Type: Power Tool
Clear All
54 Results
Sort by:
Top Sellers
Top Sellers
Most Popular
Price Low to High
Price High to Low
Top Rated Products
Top Rated
More Options Available
$
17
.
97
Was
$23.27
Save
$5.30
(23%)
(3487)
Model# 48-89-2330
Milwaukee
Cobalt Red Helix Drill Bit Set for Drill Drivers (6-Piece)
Add to Cart
Top Rated
More Options Available
Limit 5 per order
$
39
.
97
(3489)
Model# 48-89-2370
Cobalt Red Helix Drill Bit Set for Drill Drivers (15-Piece)
Add to Cart
More Options Available
$
18
.
97
(4098)
Model# 48-89-2321
Milwaukee
3/8 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
More Options Available
$
10
.
97
(4098)
Model# 48-89-2313
Milwaukee
1/4 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
More Options Available
$
13
.
97
(4096)
Model# 48-89-2317
Milwaukee
5/16 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
More Options Available
$
6
.
97
(4095)
Model# 48-89-2307
Milwaukee
5/32 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
More Options Available
$
9
.
97
(4095)
Model# 48-89-2311
Milwaukee
7/32 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
More Options Available
$
5
.
97
(4096)
Model# 48-89-2306
Milwaukee
9/64 in. Red Helix Cobalt Drill Bit
Add to Cart
More Options Available
$
20
.
97
(
$4.19
/unit)
(369)
Model# 48-89-2355
Milwaukee
1/8 in. Cobalt Red Helix Twist Drill Bit (5-Pack)
Add to Cart
More Options Available
$
4
.
78
(4095)
Model# 48-89-2301
Milwaukee
1/16 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
More Options Available
$
4
.
78
(4095)
Model# 48-89-2302
Milwaukee
5/64 in. Cobalt Red Helix Drill Bit
Add to Cart
$
93
.
06
(3)
Model# 30301-H
STARK USA
29-Piece 1/16 in. to 1/2 in. Left-Hand Cobalt Coated High Speed Steel Drill Bit Set Index
Add to Cart