The high-quality countersink drill bits can remove burrs well without leaving scratches.
It is suitable for use in the workpiece which the hardness is under 25 degrees,such as aluminium sheet,thin iron plate,the insulating board or PVC board.
The drill bits of standard sizes are compatible with all kinds of common drill and drilling machine, including vertical drilling machine.
Diameter | Full length | Shank(MM) | Blade length (3 blades) | Blade length |
4.5MM | 40MM | 4 | 4MM | 5MM |
6.3MM | 45MM | 5 | 5MM | 7MM |
8.3MM | 50MM | 6 | 6MM | 8.5MM |
10.4MM | 50MM | 6 | 7.1MM | 9.5MM |
12.4MM | 56MM | 8 | 8MM | 12MM |
16.5MM | 59MM | 10 | 10MM | 13MM |
18MM | 60MM | 10 | 10MM | 14MM |
20.5MM | 63MM | 10 | 12MM | 15MM |
23MM | 63MM | 10 | 12.5MM | 16MM |
25MM | 67MM | 12 | 13MM | 18MM |
30MM | 67MM | 12 | 15MM | 19MM |
35MM | 71MM | 12 | 18MM | 21MM |
40MM | 82MM | 12 | 21MM | 25MM |
45MM | 92MM | 12 | 23MM | 28MM |
50MM | 100MM | 12 | 25MM | 30MM |
60MM | 120MM | 12 | 33.8MM | 40MM |
