Betalent carbide pilot drill bits are made of selects precise h6 ground carbide rods ( the carbide grade is selected according to the workpiece hardness and toughness), the flutes, angle and chip removal grooved well designed by professional engineer, and manufactured by 5-axil Walter grinding machine, which ensure the good performance of the drill bits. There are 60degree tip angle, 90° and 120° for general application, among them, large quantity of 90° pilot drill bits are stocked in Betalent carbide warehouse for a quick delivery.
Betalent carbide pilot drill bits are made of selects precise h6 ground carbide rods ( the carbide grade is selected according to the workpiece hardness and toughness), the flutes, angle and chip removal grooved well designed by professional engineer, and manufactured by 5-axil Walter grinding machine, which ensure the good performance of the drill bits. There are 60degree tip angle, 90° and 120° for general application, among them, large quantity of 90° pilot drill bits are stocked in Betalent carbide warehouse for a quick delivery.
| d Cutting dia.(mm) | D Shank dia.(mm) | Lc Cutting length(mm) | L Overall length (mm) |
| 1.0 | 3 | 3 | 50/25 |
| 1.5 | 3 | 3 | 50/25 |
| 2.0 | 3 | 6 | 50/25 |
| 2.5 | 3 | 6 | 50/25 |
| 3.0 | 3 | 6 | 50/25 |
| 4.0 | 4 | 7 | 50/25 |
| 5.0 | 5 | 8 | 50/25 |
| 6.0 | 6 | 8 | 50/25 |
| 8.0 | 8 | 10 | 60/30 |
| 10.0 | 10 | 16 | 60/75 |
| 12.0 | 12 | 18 | 75 |
| 3.0/6.0 | 3.175 | 12 | 38 |
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