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Home
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Drill Bits
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Twist Drill Bits
HIGHLY RATED COBALT TWIST DRILL BITS
Shop highly rated products based on our customer reviews
4 Results
Review Rating: Highly Rated
Bit Material: Cobalt
Featured Keywords: extra length
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Department
Tools
Power Tool Accessories
Drill Bits
Twist Drill Bits
Brand
Drill America
Price
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$0 - $10
$10 - $20
Review Rating
5
4 & Up
3 & Up
2 & Up
1 & Up
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Bit Diameter
5/16 in
#31
#3
#42
1/4 in
3/16 in
3/32 in
5/32 in
7/32 in
7/64 in
9/32 in
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Bit Material
High Speed Steel
Cobalt
Number of Pieces
1 Piece
Material Application
Stainless Steel
Aluminum
Angle Iron
Cast Iron
Copper
Duct/Sheet Metal
Nickel
PVC
Plaster
Steel
Vinyl Flooring
Wood
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Bit Length (in.)
6 in
12 in
Shank Style
Straight
Features
No Additional Features
Shank Diameter
5/16 in
#31
#3
#42
1/4 in
3/16 in
3/32 in
5/32 in
7/32 in
7/64 in
9/32 in
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Drilling Depth (in)
0.375
0.5
0.75
1.0625
1.25
1.5
1.6875
2
2.8125
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Individual/Set
Individual
Featured Keywords
black oxide
high speed steel
hard metal
black oxide drill bit
variable helix
cobalt alloy
gold oxide
extra length
bits core
longer life
jobber length
drill chuck
precision start
split point
1/2 in. shank
2 high speed steel
fast drilling
round shank
135 degree split point
cobalt steel tool
cobalt twist
heavy-duty jobber length drill bit
quadedge tip
42 cobalt drill bits
cobalt steel
long life
nickel alloy
3 flat shank
cast iron
center punch
cobalt drill bits
drill driver
m42 alloy
stub length
1/2 in. drill bit
1/8 in. drill bit
3/8 in. shank
5/32 in. drill bit
5/64 in. cobalt red helix drill bit
8 piece set
10x life
23 piece
29 piece
118 degree
chip breaker
cobalt aircraft extension
drilling metal
enhanced tapered web
hard metal application
jobber length cobalt
large diameter holes
overall length
prevent bit
right-hand cut
standard bit
titanium drill bit set
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More Options Available
$
3
.
61
(119)
Model# GLBCOX63/16
Drill America
3/16 in. x 6 in. Cobalt Aircraft Extension Drill Bit
Add to Cart
Compare
More Options Available
$
10
.
44
(50)
Model# GLBCOX121/4
Drill America
1/4 in. x 12 in. Cobalt Aircraft Extension Drill Bit
Add to Cart
Compare
More Options Available
$
2
.
79
(14)
Model# GLBCOX631
Drill America
#31 x 6 in. Cobalt Aircraft Extension Drill Bit
Add to Cart
Compare
More Options Available
$
10
.
60
(8)
Model# GLBCOX123
Drill America
#3 x 12 in. Cobalt Aircraft Extension Drill Bit
Add to Cart
Compare