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Specification:
Material : High Speed Steel 4241
Cutting Angle : 118 degree
Bit Diameter : 4.7mm/0.19"
Cutting Edge Length : 57mm/2.24"
Total Length : 87mm/3.43"
Weight: 37g
Main color: Silver
HRC: 62-63
Package Content: 5pcs x Twist Drill Bit
How to Use Twist Drill Bits
Ensure the left and right cutting edges of the drill are symmetrical when drilling.
Observe the uniformity of the spark while drilling, adjust the pressure in time, and pay attention to the cooling of the bit.
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