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Tongling Changjiang Diamond Tools Co., Ltd

Dry Diamond Core Drill Bits
Dry Diamond Core Drill Bits
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Dry Diamond Core Drill Bits

Dry diamond core bits with #30/40 diamond grits and air slots to keep the bits cool and light-weight.

Quantity:
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diameter

Drilling Depth

Seg. No

tube  thickness

mm

inch

(mm)

22

7/8

9.5''

2

1.5

26

1

9.5''

3

1.8

28

1-1/8

9.5''

3

1.8

32

1-1/4

9.5''

3

1.8

35

1-3/8

9.5''

4

2

38

1-1/2

9.5''

4

2

44

1-3/4

9.5''

4

2

51

2

9.5''

4

2.2

56

2-1/4

9.5''

4

2.3

63

2-1/2

9.5''

5

2.3

71

2-3/4

9.5''

5

2.4

76

3

9.5''

6

2.4

89

3-1/2

9.5''

7

2.4

102

4

9.5''

8

2.5

108

4-1/4

9.5''

9

2.5


Dry diamond core bits with #30/40 diamond grits and air slots to keep the bits cool and light-weight. 

Designed for drilling:

■soft brick

■building block


Dry Drill Bits Dry Core Bits
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