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Availability: Show Unavailable Products
Number of Pieces: 1 Piece
Shank Diameter: #21
Shank Diameter: U
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Department
Tools
Power Tool Accessories
Drill Bits
Twist Drill Bits
Review Rating
5
4 & Up
3 & Up
2 & Up
1 & Up
Price
to
Apply
$0 - $10
$10 - $20
Bit Diameter
#21
U
Number of Pieces
1 Piece
11-20 Pieces
Shank Diameter
0
0.19 in
0.26 in
0.39 in
1/4 in
1/2 in
1-1/8 in
1-1/4 in
1 in
1/4- in
1/8 in
1-3/4 in
1-1/2 in
1-1/16 in
1-5/8 in
1/16 in
2 in
3/8 in
3/4 in
3/16 in
3/8 in.
5/16 in
5/8 in
5/32 in
7/16 in
7/16
7/8 in
7/32 in
9/16 in
9.8 mm
10 mm
11/64 in
11/32 in
13/32 in
13/64 in
15/64 in
16 mm
17/64 in
18 mm
21/64 in
22 mm
25/64 in
45/64 in
S
#1
#0
#24
#30
#31
#38
1/2- in
2-1/2 in
3/32 in
4 in
6 in
9/32 in
9/64 in
11/16 in
12 mm
15/32 in
23/64 in
43/64 in
Q
#10
#13
#16
#19
#20
#25
#2
#32
#33
#37
#40
#46
#4
#57
1/3 in
3 in
3-1/2 in
5/64 in
5MT
7 mm
7/64 in
19/32 in
19/64 in
21/32 in
29/64 in
31/64 in
35/64 in
37/64 in
51/64 in
63/64 in
D
G
O
Z
#12
#14
#15
Drilling Depth (in)
1.875
2.375
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Drilling Depth (in)
Availability: Show Unavailable Products
Number of Pieces: 1 Piece
Shank Diameter: #21
Shank Diameter: U
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$
3
.
13
(16)
Model# GLBCOX621
Drill America
#21 x 6 in. Cobalt Aircraft Extension Drill Bit
Add to Cart
More Options Available
$
14
.
53
Model# GLBCOX6U
Drill America
U x 6 in. Cobalt Aircraft Extension Drill Bit
Add to Cart