5.6mm Twist Drill High Speed Steel Bit HSS-4241 for Steel, Aluminum Alloy 10pcs

Description:

Material : High Speed Steel 4241

Type : N Type 118 degree

Bit Diameter : 5.6mm/0.22"

Cutting Edge Length : 67mm/2.64"

Total Length : 95mm/3.74"

Weight: 110g

Main color: Silver

HRC: 62-63

Package Content: 10pcs 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.