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Material : High Speed Steel 4241
Type : N Type 118 degree
Bit Diameter : 6.4mm/0.25"
Cutting Edge Length : 72mm/2.83"
Total Length : 101mm/3.98"
Weight: 16g
Main color: Silver
HRC: 62-63
Package Content: 1pcs 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.
Kindle Customer, Lenova user
Reviewed in the United States on January 2, 2021
The shank is NOT .500 inch.
M.
Reviewed in the United States on February 4, 2020
As expected
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