Step drill bit spiral flute
| Shank type | Bit Dia. (mm) | Overall length (mm) | Pc.per pkg. | Part No. |
| 1/4inch Hex MZ | 4 to 12 | 65 | 1 | D-40141 |
| 1/4inch Hex MZ | 4 to 20 | 75 | 1 | D-40157 |
| Straight | 4 to 32 | 102 | 1 | D-40163 |
| Shank type | Bit Dia. (mm) | Overall length (mm) | Pc.per pkg. | Part No. |
| 1/4inch Hex MZ | 4 to 12 | 65 | 1 | D-40141 |
| 1/4inch Hex MZ | 4 to 20 | 75 | 1 | D-40157 |
| Straight | 4 to 32 | 102 | 1 | D-40163 |
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