不带护锥中心钻 -A型 020

CENTRE DRILLS WITHOUT PROTECTIVE TAPER-TYPE A 020

带护锥中心钻 -B型 021

CENTRE DRILLS WITH PROTECTIVE TAPER-TYPE B 021

A 020

B 021

1.0

3.15

31.5

1.3

1.0

4

2.12

36.5

1.3

1.25

3.15

31.5

1.6

1.25

5

2.65

40

1.6

1.6

4

35.5

2.0

1.6

6.3

3.35

45

2.0

2.0

5

40

2.5

2.0

8

4.25

50

2.5

2.5

6.3

45

3.1

2.5

10

5.3

56

3.1

3.15

8

50

3.9

3.15

11.2

6.7

60

3.9

4.0

10

56

5.0

4.0

14

8.5

67

5.0

5.0

12.5

63

6.3

5.0

18

10.6

75

6.3

6.3

16

71

8.0

6.3

20

13.2

80

8.0

8.0

20

80

10.1

8.0

25

17

100

10.1

10.0

25

100

12.8

10.0

31.5

21.2

125

12.8

1.0

3.15

31.5

1.3

1.0

4

2.12

36.5

1.3