| 摘要 |
The holder has a stepped portion (5) accommodating the cutter (2), and in which there is a tapped hole (8) for the screw (3) detachably securing the cutter. The other end (13) of the hole forms the outlet from an internal passage (12) leading from the other end (14) of the holder, and through which a coolant and/or flushing agent is delivered. |
