Step drills are used for:
1. Sheet metal working in electrical, sanitary engineering, heating technologies, automotive, mechanical engineering, switching systems and aviation
2. Non-ferrous metal, steel, stainless steel, themoplastics, duroplastics, sheet metals up to 0.16" (8 gauge) thick
3. Center, spot-drill, bore and debur, all in one operation
Features:
1. CBN ground flutes without burrs mean a superior cutting edge an longer tool life
2. Each step has a radially adjusted relief produced by CBN grinding, relating directly to the diameter of the step, so the cutting edge is always the highest point of the diameter
3. Each step is axially CBN relief-ground, meaning the cutting edge is also the highest point of the axial cutting axis
4. The cutting edge of each step has relief angle, meaning the cutting edge is alos the highest point in advance direction
Sizes available:
| Size (mm) | Overal length (mm) | Steps | Shank (mm) |
| 5-25 | 84 | 11 | 10 |
| 6-30 | 97 | 13 | 10 |
| 6-38 | 104 | 12 | 10 |
| 6-30.5 | 70 | 11 | 10 |
| 6-37 | 102 | 12 | 10 |
| 9-36 | 102 | 12 | 10 |
| 10.5-40.5 | 107 | 13 | 10 |
| 7-40.5 | 115 | 13 | 10 |