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90 Degree 0 Flute HSS Countersink Deburring Bits Features:

1.This bit should use the bench drill , it is easy to shake and it will affect the chamfering effect if you use the hand drill.

2.High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.

3.Ideal for cutting through metal, wood and plastic (hardness <25 degrees)

4.Round shanks allow use with a wide variety of toolholding systems. 

5.Used for workpiece circular aperture chamfering or cone hole

6. Other degree / shank type / specifications are available

Metric
For ThreaddLD
mmmmmm
1-46.35456.35
2-510458
5-1014488
10-15216510
15-20288212
20-253510215
25-304411515
30-354812715
35-405313615
40-506416618
Imperial
For ThreaddLD
inchinchinch
#015/641-3/41/4
#113/321-3/41/4
#217/3221/4
#325/322-3/41/2
#41-1/1631/2
#51-15/323-3/41/2
#61-3/445/8
#724-3/85/8
#82-1/24-3/43/4