Bosch

CO4128

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Description

Bosch cobalt drill bits are specially designed for drilling in hard steel. Thick web helix delivers fast material removal combined with increased durability for maximum efficiency and performance. Each bit is manufactured to exacting specifications and features a split point that starts on contact with no walking or skating, eliminating the need for a center punch.
Part Number
CO4128
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Specifications

Bit Diameter
1/64 In.
Bit Material
Cobalt
Country of Origin
China
Diameter
1/64"
Drill Bit Length Type
Jobber
Drill Bit Type
Twist
Drill Diameter (in)
0.0156
Drill Point Angle
118°
Drill Point Design
Standard
Flute Length (in)
0.197
Length (in)
0.75
Minimum Chuck Size Required
1/8 in
Overall Length (in)
0.75
Package Quantity
12
Quantity
12 (bulk)
Quick Change Impact Driver Bit
No
Recommended Safety Equipment
Eye, ear and dust protection
Shank Diameter (in)
0.0156
Single / Double Ended
Single
Surface Coating
Uncoated (Bright Finish)
Note
1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger