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Home
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Drill Bits
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Twist Drill Bits
Twist Drill Bits
55 Results
Material Application: Aluminum
Bit Material: Cobalt
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Drill Bits
Twist Drill Bits
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Brand
Drill America
Milwaukee
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$0 - $10
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$20 - $30
$30 - $40
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Special Values
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Bit Diameter
1/8 in
1/2 in
1/4 in
5/16 in
#23
#27
#37
#47
3/8 in
3/16 in
5/32 in
11/64 in
19/64 in
H
#13
#14
#18
#22
#24
#38
#39
#46
25/64 in
35/64 in
B
D
G
J
N
O
X
Y
#12
#15
#16
#25
#31
#3
#41
#48
#49
#4
#51
#52
#53
#56
#57
#59
#5
#61
#63
#77
#79
#80
#8
3/32 in
5/64 in
7/32 in
7/64 in
9/32 in
9/64 in
11/16 in
13/32 in
13/64 in
15/64 in
17/32 in
21/64 in
29/32 in
37/64 in
47/64 in
57/64 in
61/64 in
A
C
L
M
Q
S
T
U
V
W
Z
#11
#17
#19
#20
#21
#26
#28
#2
#33
#34
#35
#36
#40
#42
#44
#45
#50
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Bit Material
High Speed Steel
Cobalt
Titanium
Carbide
Black Oxide
Multiple
Alloy Steel
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Material Application
Stainless Steel
Aluminum
Steel
Duct/Sheet Metal
Cast Iron
PVC
Wood
Angle Iron
Copper
Nickel
Plaster
Vinyl Flooring
Linoleum
Ceramic Tile
Porcelain
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Number of Pieces
1 Piece
5-10 Pieces
11-20 Pieces
21-30 Pieces
41-60 Pieces
Bit Length (in.)
0.75 in
0.875 in
1 in
1.125 in
1.25 in
1.375 in
1.5 in
1.625 in
1.6875 in
1.75 in
1.8125 in
1.875 in
1.8912 in
1.9375 in
2 in
2.00
2.01
2.0625 in
2.125 in
2.1875 in
2.25 in
2.375 in
2.4375 in
2.5 in
2.625 in
2.6875 in
2.75 in
2.8125 in
2.875 in
2.875
2.8762 in
2.9375 in
3 in
3.0625 in
3.125 in
3.125
3.25 in
3.31 in
3.3125 in
3.375 in
3.3884 in
3.5 in
3.5625 in
3.6875 in
3.75 in
3.75
3.875 in
3.88
4 in
4
4.125 in
4.25 in
4.375 in
4.5 in
4.50
4.5
4.652 in
4.75 in
4.875 in
4.8856 in
5 in
5
5.0038 in
5.12
5.125 in
5.2402 in
5.25 in
5.5 in
5.8706 in
5.9888 in
6 in
6
6.25 in
6.375 in
6.5 in
6.625 in
6.75 in
7 in
7.125 in
7.5 in
7.625 in
7.75 in
8 in
8.25 in
8.75 in
9 in
10 in
10.75 in
12 in
12
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Features
No Additional Features
Shank Style
Straight
3-Flat
Hex
Shank Diameter
1/2 in
3/8 in
#23
#27
#37
#47
5/16 in
11/64 in
19/64 in
H
#13
#14
#18
#22
#24
#38
#39
#46
3/8 in.
25/64 in
B
D
G
J
N
O
X
Y
#12
#15
#16
#25
#31
#3
#41
#48
#49
#4
#51
#52
#53
#56
#57
#59
#5
#61
#63
#77
#79
#80
#8
1/4 in
1/8 in
3/16 in
5/32 in
5/64 in
7/32 in
9/32 in
13/64 in
15/64 in
21/64 in
35/64 in
37/64 in
A
C
L
M
Q
S
T
U
V
W
Z
#11
#17
#19
#20
#21
#26
#28
#2
#33
#34
#35
#36
#40
#42
#44
#45
#50
#55
#58
#60
#62
#64
#65
#66
#68
#69
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Drilling Depth (in)
0.125
0.1875
0.25
0.3125
0.375
0.5
0.5625
0.625
0.6875
0.75
0.8125
0.86614173
0.875
0.9375
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
1.9375
2
2.125
2.1875
2.20472441
2.25
2.3125
2.375
2.5
2.5625
2.625
2.75
2.8125
2.875
2.9375
3
3.0625
3.1875
3.3125
3.4375
3.5
3.50393701
3.62204724
3.625
3.75
3.85826772
3.875
4
4.0625
4.125
4.25
4.37007874
4.375
4.48818898
4.5
4.75
4.8125
4.875
5.1875
5.375
5.625
6.125
+ View All
Individual/Set
Individual
Set
Featured Keywords
black oxide
high speed steel
gold oxide
jobber length
black oxide drill bit
cobalt alloy
hard metal
variable helix
extra length
split point
drill chuck
bits core
2 high speed steel
longer life
1/2 in. shank
length drill bit
round shank
precision start
cobalt steel tool
fast drilling
42 cobalt drill bits
cobalt twist
nickel alloy
quadedge tip
stub length
cobalt drills
standard length
taper length drill
1/2 in. drill bit
1/2. drill
1/8 in. drill bit
3/8 in. shank
5 drill bits
5/32 in. drill bit
5/64 in. cobalt red helix drill bit
6 in. cobalt aircraft extension drill bit
42 cobalt drills
135 degree split point
135 split point
cobalt aircraft extension
cobalt steel
letter size
right-hand cut
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Top Rated
More Options Available
$
37
.
97
(3393)
Cobalt Red Helix Drill Bit Set for Drill Drivers (15-Piece)
Add to Cart
Compare
More Options Available
$
25
.
47
(3888)
Milwaukee
1/2 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
15
.
47
(3887)
Milwaukee
3/8 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
7
.
47
(3887)
Milwaukee
1/4 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
6
.
47
(3886)
Milwaukee
3/16 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
10
.
47
(3887)
Milwaukee
5/16 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
3
.
97
(3886)
Milwaukee
1/8 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
21
.
97
(3879)
Milwaukee
7/16 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
4
.
97
(3886)
Milwaukee
5/32 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
6
.
67
(3886)
Milwaukee
7/32 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
More Options Available
$
4
.
47
(3886)
Milwaukee
9/64 in. Red Helix Cobalt Drill Bit
Add to Cart
Compare
More Options Available
$
5
.
47
(3886)
Milwaukee
11/64 in. Cobalt Red Helix Drill Bit
Add to Cart
Compare