Our combined drill bit & countersinks ( center drill bits) are made from super quality high speed steel.
ANSI or DIN standard available.
Speical desighn available on request.
Type A--plain type. Type B--bell type. Type R.
They are cbn nc ground with special design flute guarantee long life and good working.
Kinds of sets (kits) available.
Kinds of coating available on request.
Size |
Body Diameter |
Overall Length |
|
Size |
Body Diameter |
Overall Length |
|
0.5 |
3.15 |
25 |
|
3.15 |
8 |
50 |
0.8 |
3.15 |
25 |
|
4 |
10 |
56 |
1 |
3.15 |
31.5 |
|
5 |
12.5 |
63 |
1.25 |
3.15 |
31.5 |
|
6.3 |
16 |
71 |
1.6 |
4 |
35.5 |
|
8 |
20 |
80 |
2 |
5 |
40 |
|
10 |
25 |
100 |
2.5 |
6.3 |
45 |
|
12.5 |
31.5 |
125 |