| 摘要 |
A holder according to an aspect is rod shaped and provided with a head part situated at the distal end side, the head part having an upper jaw part and a lower jaw part which are situated at the distal end, an insert pocket situated between the upper jaw part and the lower jaw part, an inclined first wall surface situated at the upper surface of the upper jaw part and extending from the side of one side surface, an upwardly inclined second wall surface to the rear end side from the first wall surface, a third wall surface of recessed shape situated to the rear end side from the second wall surface, and a fourth wall surface that inclines upwardly away from the third wall surface. The third wall surface sinks downwardly from the upper end of the second wall surface. |
